<SEC-DOCUMENT>0001047469-15-006145.txt : 20150716
<SEC-HEADER>0001047469-15-006145.hdr.sgml : 20150716
<ACCEPTANCE-DATETIME>20150716090106
ACCESSION NUMBER:		0001047469-15-006145
CONFORMED SUBMISSION TYPE:	424B5
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20150716
DATE AS OF CHANGE:		20150716

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SENIOR HOUSING PROPERTIES TRUST
		CENTRAL INDEX KEY:			0001075415
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				043445278
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		424B5
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-205298
		FILM NUMBER:		15990608

	BUSINESS ADDRESS:	
		STREET 1:		TWO NEWTON PLACE
		STREET 2:		255 WASHINGTON STREET
		CITY:			NEWTON
		STATE:			MA
		ZIP:			02458
		BUSINESS PHONE:		6173323990

	MAIL ADDRESS:	
		STREET 1:		TWO NEWTON PLACE
		STREET 2:		255 WASHINGTON STREET
		CITY:			NEWTON
		STATE:			MA
		ZIP:			02458
</SEC-HEADER>
<DOCUMENT>
<TYPE>424B5
<SEQUENCE>1
<FILENAME>a2225281z424b5.htm
<DESCRIPTION>424B5
<TEXT>
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Use these links to rapidly review the document<BR>
<A HREF="#bg15403a_main_toc">  Table of Contents</A> <BR>
<A HREF="#bg15401_table_of_contents">  TABLE OF CONTENTS</A><BR></font>
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<A HREF="#bg15403a_main_toc">Table of Contents</A> </FONT></P>

<P ALIGN="RIGHT" style="font-family:arial;"><FONT SIZE=2><B>Filed Pursuant to Rule&nbsp;424(b)(5)<BR>
Registration No.&nbsp;333-205298  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B>


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</B></FONT><FONT COLOR="#FF1100" SIZE=2>The information in this preliminary prospectus supplement and
the accompanying prospectus is not complete and may be changed. This preliminary prospectus supplement and the accompanying prospectus are not an offer to sell these securities and are not soliciting
an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.</FONT></P>

<P ALIGN="RIGHT" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;"><B>


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</B></FONT><FONT COLOR="#FF1100" SIZE=1><B>Subject to Completion<BR>
Preliminary Prospectus Supplement dated&nbsp;July&nbsp;16, 2015  </B></FONT></P>

<P style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;"><B>PROSPECTUS SUPPLEMENT<BR>  </B></FONT><FONT  style="font-size:8pt;line-height:9pt;">(To prospectus dated June&nbsp;26, 2015) </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=5><B>Senior Housing Properties Trust  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=5><B>
<IMG SRC="g947194.jpg" ALT="LOGO" WIDTH="102" HEIGHT="118">
  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=4><B>$&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;% Senior Notes Due 2025  </B></FONT></P>

<P style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;"><B>COMPANY</B></FONT></P>

<UL>
<DL compact>
<DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">We are a real estate investment trust, or REIT, which invests in senior
living communities, including independent living communities, assisted living communities and nursing homes, wellness centers and properties leased to medical providers, medical related businesses,
clinics and biotech laboratory tenants. </FONT></DD></DL>
</UL>

<P style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;"><B>USE OF PROCEEDS</B></FONT></P>

<UL>
<DL compact>
<DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">We expect to use the net proceeds from this offering to repay amounts
outstanding under our revolving credit facility and for general business purposes, including funding in part the pending acquisition described below in "Recent developments" or other possible future
acquisitions of properties, as more fully described below under "Use of proceeds." </FONT></DD></DL>
</UL>

<P style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;"><B>NOTES</B></FONT></P>

<UL>
<DL compact>
<DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">We are offering $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;aggregate principal amount of our
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;% senior notes due 2025, or the notes. </FONT><FONT  style="font-size:8pt;line-height:9pt;">
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">Interest on the notes will be payable semi-annually on February&nbsp;1 and
August&nbsp;1, each year, commencing February&nbsp;1, 2016. </FONT><FONT  style="font-size:8pt;line-height:9pt;">
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">We may redeem the notes in whole at any time or in part from time to time
before they mature at the applicable redemption price described in this prospectus supplement under the caption "Description of notes&#151;Optional Redemption of the Notes." If the notes are
redeemed on or after February&nbsp;1, 2025 (six months prior to their stated maturity date), the redemption price for the notes will not include a Make-Whole Amount (as defined herein). </FONT> <FONT  style="font-size:8pt;line-height:9pt;">
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">There is no sinking fund. </FONT><FONT  style="font-size:8pt;line-height:9pt;">
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">The notes will be our senior unsecured obligations and will rank equally
with all of our other existing and future unsecured senior indebtedness. The notes will be effectively subordinated to all liabilities of our subsidiaries and to our secured indebtedness. </FONT> <FONT  style="font-size:8pt;line-height:9pt;">
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">The notes constitute a new issue of securities with no established trading
market and will not be listed on any national securities exchange. </FONT></DD></DL>
</UL>

<P style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;"><B>Investing in the notes involves risks that are described in the "Risk Factors" section of our Annual Report on Form&nbsp;10-K for the year ended December&nbsp;31, 2014, or
our Annual Report.</B></FONT></P>

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<TH ALIGN="LEFT" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT><BR></TH>
<TH style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:arial;border-bottom:solid #000000 1.0pt;"><FONT  style="font-size:8pt;line-height:9pt;"><B>Public offering<BR>
price<font
style="font-size:6pt;position:relative;top:-2pt;add_sup:2pt;">(1)</font> </B></FONT></TH>
<TH style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:arial;border-bottom:solid #000000 1.0pt;"><FONT  style="font-size:8pt;line-height:9pt;"><B>Underwriting<BR>
discount </B></FONT></TH>
<TH style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:arial;border-bottom:solid #000000 1.0pt;"><FONT  style="font-size:8pt;line-height:9pt;"><B>Proceeds, before<BR>
expenses, to us<font
style="font-size:6pt;position:relative;top:-2pt;add_sup:2pt;">(1)</font> </B></FONT></TH>
<TH style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TH>
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<TD VALIGN="BOTTOM" style="font-family:arial;"><p style="font-family:arial;margin-left:7pt;text-indent:-7pt;"><FONT  style="font-size:8pt;line-height:9pt;"><B> </B></FONT><FONT  style="font-size:8pt;line-height:9pt;">Per Note</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">%</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">%</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">%</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TD>
</TR>
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<TD VALIGN="BOTTOM" style="font-family:arial;"><p style="font-family:arial;margin-left:14pt;text-indent:-7pt;"><FONT  style="font-size:8pt;line-height:9pt;"> </FONT><FONT  style="font-size:8pt;line-height:9pt;">Total</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">$</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">$</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">$</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TD>
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<DT style='font-family:arial;margin-bottom:-9pt;'><FONT  style="font-size:8pt;line-height:9pt;"><font
style="font-size:6pt;position:relative;top:-2pt;add_sup:2pt;">(1)</font></FONT></DT><DD style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">Plus
accrued interest, if any, from July&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;, 2015, if settlement occurs after that date. </FONT></DD></DL>

<P style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;"><B>Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus supplement or
the accompanying prospectus is truthful or complete. Any representation to the contrary is a criminal offense.</B></FONT></P>

<P style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">The
notes will be ready for delivery in book-entry form only through The Depository Trust Company on or about July&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;, 2015. </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;"><I>

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<P ALIGN="CENTER" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;"><I>Joint Book-Running Managers  </I></FONT></P>
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<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=3><B>Citigroup</B></FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=3>&nbsp;</FONT></TD>
<TD ALIGN="CENTER" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=3><B>RBC Capital Markets</B></FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=3>&nbsp;</FONT></TD>
<TD ALIGN="CENTER" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=3><B>UBS Investment Bank</B></FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=3>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=3><B>Wells Fargo Securities</B></FONT></TD>
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&nbsp;&nbsp;&nbsp;
</font></p><p align=center style="font-family:arial;"><font> </FONT> <FONT  style="font-size:8pt;line-height:9pt;">
The date of this prospectus supplement is July&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;, 2015. </FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2><B> Table of Contents  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> <A NAME="BG15403_TOC"></A>  </B></FONT></P>
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<TH style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:arial;border-bottom:solid #000000 1.0pt;"><FONT SIZE=2>Page </FONT></TH>
<TH style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TH>
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<TD style="font-family:arial;"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2><B>Prospectus supplement</B></FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
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<TD style="font-family:arial;"><A HREF="#II"><p style="font-family:arial;margin-top:12pt;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Information incorporated by reference</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#II"><FONT SIZE=2><BR>
S-iii</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
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<TD style="font-family:arial;"><A HREF="#PSS"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Prospectus supplement summary</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#PSS"><FONT SIZE=2>S-1</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
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<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#WC"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Warning concerning forward looking statements</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#WC"><FONT SIZE=2>S-4</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
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<TD style="font-family:arial;"><A HREF="#UP"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Use of proceeds</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#UP"><FONT SIZE=2>S-8</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#ROE"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Ratio of earnings to fixed charges</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#ROE"><FONT SIZE=2>S-9</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#DN"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Description of notes</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#DN"><FONT SIZE=2>S-10</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#DO"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Description of other indebtedness</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#DO"><FONT SIZE=2>S-15</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#MF"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Material federal income tax considerations</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#MF"><FONT SIZE=2>S-17</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#UW"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Underwriting</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#UW"><FONT SIZE=2>S-22</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#LM"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Legal matters</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#LM"><FONT SIZE=2>S-24</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#EXP"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Experts</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#EXP"><FONT SIZE=2>S-24</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#WHE"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Where you can find more information</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#WHE"><FONT SIZE=2>S-24</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#GLO"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Glossary</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#GLO"><FONT SIZE=2>S-25</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><p style="font-family:arial;margin-top:12pt;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2><B>Prospectus dated June&nbsp;26, 2015</B></FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#bi15401_about_this_prospectus"><p style="font-family:arial;margin-top:12pt;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>About this prospectus</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#bi15401_about_this_prospectus"><FONT SIZE=2><BR>
i</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#da15401_prospectus_summary"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Prospectus summary</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#da15401_prospectus_summary"><FONT SIZE=2>1</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#da15401_risk_factors"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Risk factors</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#da15401_risk_factors"><FONT SIZE=2>1</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#da15401_warning_concerning_forward_looking_statements"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Warning concerning forward looking statements</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#da15401_warning_concerning_forward_looking_statements"><FONT SIZE=2>1</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#da15401_statement_concerning_limited_liability"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Statement concerning limited liability</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#da15401_statement_concerning_limited_liability"><FONT SIZE=2>5</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#dc15401_ratio_of_earnings_to_fixed_charges"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Ratio of earnings to fixed charges</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#dc15401_ratio_of_earnings_to_fixed_charges"><FONT SIZE=2>6</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#dc15401_use_of_proceeds"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Use of proceeds</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#dc15401_use_of_proceeds"><FONT SIZE=2>6</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#dc15401_description_of_debt_securities"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Description of debt securities</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#dc15401_description_of_debt_securities"><FONT SIZE=2>6</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#de15401_description_of_shares_of_beneficial_interest"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Description of shares of beneficial interest</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#de15401_description_of_shares_of_beneficial_interest"><FONT SIZE=2>17</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#dg15401_description_of_depositary_shares"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Description of depositary shares</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#dg15401_description_of_depositary_shares"><FONT SIZE=2>23</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#di15401_description_of_warrants"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Description of warrants</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#di15401_description_of_warrants"><FONT SIZE=2>27</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#di15401_description_of_certain_provisi__des03778"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Description of certain provisions of Maryland law and of our declaration of trust and
bylaws</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#di15401_description_of_certain_provisi__des03778"><FONT SIZE=2>28</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#dm15401_selling_security_holders"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Selling security holders</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#dm15401_selling_security_holders"><FONT SIZE=2>39</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#dm15401_plan_of_distribution"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Plan of distribution</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#dm15401_plan_of_distribution"><FONT SIZE=2>39</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#dm15401_legal_matters"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Legal matters</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#dm15401_legal_matters"><FONT SIZE=2>41</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#dm15401_experts"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Experts</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#dm15401_experts"><FONT SIZE=2>41</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#dm15401_where_you_can_find_more_information"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Where you can find more information</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#dm15401_where_you_can_find_more_information"><FONT SIZE=2>41</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD style="font-family:arial;"><A HREF="#dm15401_information_incorporated_by_reference"><p style="font-family:arial;margin-left:13pt;text-indent:-13pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Information incorporated by reference</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><A HREF="#dm15401_information_incorporated_by_reference"><FONT SIZE=2>42</FONT></A></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
</TABLE></DIV>
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 </DIV>
 <P style="font-family:arial;"><FONT SIZE=2><I>References in this prospectus supplement to "we," "us," "our" and "SNH" mean Senior Housing Properties Trust and its consolidated subsidiaries, unless the context otherwise
requires. References in this prospectus supplement to the "notes" mean the&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;% senior notes due 2025 offered hereby.</I></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>This
prospectus supplement contains a description of the terms of the notes. A description of the indenture relating to our debt securities is set forth in the accompanying prospectus under the
heading "Description of debt securities." This prospectus supplement, or the information incorporated by reference herein, may add, update or change information in the accompanying prospectus (or the
information incorporated by reference therein). If information in this prospectus supplement is inconsistent with the accompanying prospectus, this prospectus supplement will apply and will supersede
that information in the accompanying prospectus. </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-i</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2><A
HREF="#bg15403a_main_toc">Table of Contents</A></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>It
is important for you to read and consider all information contained in this prospectus supplement, the accompanying prospectus and the information incorporated by reference herein and therein in
making your investment decision. You should also read and consider the information in the documents to which we have referred you in "Where you can find more information" in this prospectus supplement
and the accompanying prospectus. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>You
should rely only on the information contained or incorporated by reference in this prospectus supplement, the accompanying prospectus and any related free writing prospectus issued by us. We have
not, and the underwriters have not, authorized any other person to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it.
We are not, and the underwriters are not, making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should assume that the information appearing in
this prospectus supplement, the accompanying prospectus and any related free writing prospectus issued by us, as well as information we previously filed with the Securities and Exchange Commission, or
the SEC, and incorporated by reference, is accurate only as of their respective dates. Our business, financial condition, results of operations and prospects may have changed since those dates. </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-ii</FONT></P>

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</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2>
<A HREF="#bg15403a_main_toc">Table of Contents</A> </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2><A
NAME="bi15403_information_incorporated_by_reference"> </A>
<A NAME="toc_bi15403_1"> </A>
<BR></FONT><FONT SIZE=2><B>  <A NAME="II"></A>Information incorporated by reference    <BR>    </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>The SEC allows us to "incorporate by reference" the information we file with them, which means that we can disclose important information to you by
referring you to documents previously filed with the SEC. The information incorporated by reference is considered to be part of this prospectus supplement and accompanying prospectus, and information
that we subsequently file with the SEC will automatically update and supersede this information. We incorporate by reference the documents listed below which were filed with the SEC under the
Securities Exchange Act of 1934, as amended, or the Exchange Act:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>Our Annual Report; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>Our Quarterly Report on Form&nbsp;10-Q for the quarter ended
March&nbsp;31, 2015; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>The information identified as incorporated by reference under
Items&nbsp;10, 11, 12, 13 and 14 of Part&nbsp;III of our Annual Report from our definitive Proxy Statement for our 2015 Annual Meeting of Shareholders filed with the SEC on March&nbsp;2, 2015;
and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>Our Current Reports on Form&nbsp;8-K dated January&nbsp;29, 2015,
February&nbsp;3, 2015, February&nbsp;4, 2015, May&nbsp;19, 2015, June&nbsp;5, 2015 (Item&nbsp;1.01 and the related exhibits included in Item&nbsp;9.01 only) and June&nbsp;26, 2015. </FONT></DD></DL>
</UL>

<P style="font-family:arial;"><FONT SIZE=2>We
also incorporate by reference each of the following documents that we may file with the SEC after the date of this prospectus supplement but before the termination of the offering of the
notes:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>Reports filed under Sections&nbsp;13(a) and (c)&nbsp;of the Exchange
Act; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>Definitive proxy or information statements filed under Section&nbsp;14 of
the Exchange Act in connection with any subsequent shareholders' meeting; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>Any reports filed under Section&nbsp;15(d) of the Exchange Act. </FONT></DD></DL>
</UL>

<P style="font-family:arial;"><FONT SIZE=2>You
may request a copy of any of these filings (excluding exhibits other than those which we specifically incorporate by reference in this prospectus supplement or the accompanying prospectus), at no
cost, by writing, emailing or telephoning us at the following address: </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>Investor
Relations<BR>
Senior Housing Properties Trust<BR>
Two Newton Place<BR>
255 Washington Street, Suite&nbsp;300<BR>
Newton, Massachusetts 02458-1634<BR>
(617)&nbsp;796-8234<BR>
info@snhreit.com </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-iii</FONT></P>

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<A HREF="#bg15403a_main_toc">Table of Contents</A> </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>&nbsp;<BR></FONT></P>


<P style="font-family:arial;"><FONT SIZE=2><I> </i></font></p>
<DIV style="width:100%;border:#000000 solid 1pt;padding-top:12pt;padding-right:12pt;padding-bottom:1pt;padding-left:12pt;">
 <P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2><A
NAME="ca15403_prospectus_supplement_summary"> </A>
<A NAME="toc_ca15403_1"> </A>
<BR></FONT><FONT SIZE=2><B>  <A NAME="PSS"></A>Prospectus supplement summary    <BR>    </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>This summary may not contain all of the information that is important to you. You should carefully read this entire prospectus
supplement and the accompanying prospectus. You should also read
the documents referred to in "Information incorporated by reference" in this prospectus supplement and the accompanying prospectus.</I></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> Our Company  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>We are a real estate investment trust, or REIT, which invests in senior living communities, including independent living communities, assisted living
communities and nursing homes, wellness centers and properties leased to medical providers, medical related businesses, clinics and biotech laboratory tenants, or MOBs. As of July&nbsp;15, 2015, we
owned 428 properties (452 buildings) located in 42 states and Washington, D.C., including three properties (three buildings) classified as held for sale. On that date, the undepreciated carrying value
of our properties, net of impairment losses, was $7.4&nbsp;billion, excluding properties classified as held for sale. As of March&nbsp;31, 2015, 97% of our net operating income, or NOI, came from
properties where a majority of the charges are paid from private resources. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>Our
principal place of business is Two Newton Place, 255 Washington Street, Suite&nbsp;300, Newton, Massachusetts 02458-1634 and our telephone number is (617)&nbsp;796-8350. </FONT></P>


<P style="font-family:arial;"><FONT SIZE=2><B> Recent Developments  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I> Acquisition of shares of RMR&nbsp;Inc.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;In June 2015, we acquired 5,272,787 shares of Reit Management&nbsp;&amp; Research&nbsp;Inc., or RMR&nbsp;Inc., from
RMR&nbsp;Inc. for an aggregate purchase price of $60.7&nbsp;million. As payment for these shares, we issued 2,345,000 shares of our common shares of beneficial interest valued at
$46.8&nbsp;million to RMR&nbsp;Inc., and made a cash payment to RMR&nbsp;Inc. of $14.0&nbsp;million. Our common shares were valued at their volume weighted average trading prices during the 20
business days prior to the acquisition. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I> Amendment and Restatement of Management Agreements with RMR&nbsp;LLC.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;In connection with our acquisition of shares of RMR&nbsp;Inc. described above, in June
2015 we and Reit Management&nbsp;&amp; Research&nbsp;LLC, or RMR&nbsp;LLC, which is majority owned by RMR&nbsp;Inc., entered into an amended and restated business management agreement which
amended and restated our preexisting business management agreement, as well as an amended and restated property management agreement which amended and restated our preexisting property management
agreement. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I> Acquisition of 37 senior living communities.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;In December 2014, we entered into a purchase agreement to acquire 38 senior living communities with 3,466 living units
located in 16 states for $790.0&nbsp;million, excluding closing costs, and including the assumption of approximately $151.5&nbsp;million of mortgage debt with a weighted average interest rate of
4.77%. These communities include an aggregate of 3,466 living units, comprised of 826 independent living units, 1,860 assisted living units, 744 memory care units and 36 skilled nursing facility
units. On May&nbsp;1, 2015, we completed the acquisition of 37 of these senior living communities with 3,379 living units for approximately $762.6&nbsp;million, excluding closing costs, and we
amended the purchase agreement to accommodate a delayed closing of the remaining senior living community with 87 living units. The acquisition of the remaining one senior living community is expected
to close before year end 2015, but this acquisition is subject to various conditions; accordingly, we can provide no assurance that we will acquire this community, that the acquisition will not be
delayed further or that the terms will not change. </FONT></P>
 <p style="font-family:arial;"><font style="font-size:1pt;line-height:1pt;">&nbsp;</font></p>
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 <P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-1</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2>&nbsp;<BR></FONT></P>


<P style="font-family:arial;"><FONT SIZE=2><I> </i></font></p>
<DIV style="width:100%;border:#000000 solid 1pt;padding-top:12pt;padding-right:12pt;padding-bottom:1pt;padding-left:12pt;">

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2><A
NAME="cc15403_the_offering"> </A>
<A NAME="toc_cc15403_1"> </A>
<BR></FONT><FONT SIZE=2><B>  The offering    <BR>    </B></FONT></P>
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<p style="font-family:arial;"></FONT></P>

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<TD style="font-family:arial;"><p style="font-family:arial;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Issuer</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>Senior Housing Properties Trust.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:arial;"><p style="font-family:arial;margin-top:12pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Securities offered</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><p align=left style="font-family:arial;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>$&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;aggregate principal amount
of&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;% senior notes due 2025.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:arial;"><p style="font-family:arial;margin-top:12pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Maturity</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><p align=left style="font-family:arial;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>August&nbsp;1, 2025</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:arial;"><p style="font-family:arial;margin-top:12pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Interest rate</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><p align=left style="font-family:arial;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;% per annum</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:arial;"><p style="font-family:arial;margin-top:12pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Interest payment dates</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><p align=left style="font-family:arial;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Semi-annually on February&nbsp;1 and August&nbsp;1 of each year, commencing February&nbsp;1, 2016.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:arial;"><p style="font-family:arial;margin-top:12pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Ranking</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><p align=left style="font-family:arial;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>The notes will be senior unsecured obligations of Senior Housing Properties Trust and will rank equally with all
of our existing and future unsecured senior indebtedness. The notes will be effectively subordinated to all existing and future indebtedness of our subsidiaries. The notes will also be effectively subordinated to our existing and future secured
indebtedness.</FONT></TD>
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<TD style="font-family:arial;"><p style="font-family:arial;margin-top:12pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Optional redemption</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><p align=left style="font-family:arial;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>We may redeem the notes at any time at our option in whole or in part. The redemption price for the notes will
equal the outstanding principal of the notes being redeemed plus accrued and unpaid interest and the applicable Make-Whole Amount (as defined herein), if any. If the notes are redeemed on or after February&nbsp;1, 2025 (six months prior to their
stated maturity date), the redemption price will not include a Make-Whole Amount (as defined herein). See "Description of the notes&#151;Optional Redemption of the Notes."</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD style="font-family:arial;"><p style="font-family:arial;margin-top:12pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Certain covenants</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><p align=left style="font-family:arial;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>The indenture under which the notes will be issued will contain various covenants, including the
following:</FONT></TD>
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<TD style="font-family:arial;"><p style="font-family:arial;margin-top:12pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><p align=left style="font-family:arial;margin-top:12pt;margin-bottom:-12pt;margin-left:0pt;"><FONT SIZE=2> </font> &#149; </font></p> <p align=left style="font-family:arial;margin-top:0pt;margin-left:18pt;"> <font size=2> </FONT><FONT SIZE=2>We will not
be able to incur additional Debt if the aggregate principal amount of our outstanding Debt is greater than 60% of Adjusted Total Assets.</FONT></TD>
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<TD style="font-family:arial;"><p style="font-family:arial;margin-top:12pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><p align=left style="font-family:arial;margin-top:12pt;margin-bottom:-12pt;margin-left:0pt;"><FONT SIZE=2> </font> &#149; </font></p> <p align=left style="font-family:arial;margin-top:0pt;margin-left:18pt;"> <font size=2> </FONT><FONT SIZE=2>We will not
be able to incur any additional Secured Debt if the aggregate principal amount of our outstanding Secured Debt is greater than 40% of Adjusted Total Assets.</FONT></TD>
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<TD style="font-family:arial;"><p style="font-family:arial;margin-top:12pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><p align=left style="font-family:arial;margin-top:12pt;margin-bottom:-12pt;margin-left:0pt;"><FONT SIZE=2> </font> &#149; </font></p> <p align=left style="font-family:arial;margin-top:0pt;margin-left:18pt;"> <font size=2> </FONT><FONT SIZE=2>We will not
be able to incur additional Debt unless our Consolidated Income Available for Debt Service is at least 1.5 times our Annual Debt Service.</FONT></TD>
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<TR VALIGN="TOP">
<TD style="font-family:arial;"><p style="font-family:arial;margin-top:12pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><p align=left style="font-family:arial;margin-top:12pt;margin-bottom:-12pt;margin-left:0pt;"><FONT SIZE=2> </font> &#149; </font></p> <p align=left style="font-family:arial;margin-top:0pt;margin-left:18pt;"> <font size=2> </FONT><FONT SIZE=2>We will
maintain Total Unencumbered Assets of at least 1.5 times our Unsecured Debt.</FONT></TD>
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<TD style="font-family:arial;"><p style="font-family:arial;margin-top:12pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><p align=left style="font-family:arial;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>These covenants are complex and are described in more detail under "Description of notes&#151;Certain
Covenants."</FONT></TD>
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<TD style="font-family:arial;"><p style="font-family:arial;margin-top:12pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Sinking fund</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><p align=left style="font-family:arial;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>The notes are not entitled to any sinking fund payments.</FONT></TD>
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 <P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-2</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2><I> </i></font></p>
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 <DIV style="padding:0pt;position:relative;width:100%;margin-left:0%;">
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<TD style="font-family:arial;"><p style="font-family:arial;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Form and denomination</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><p align=left style="font-family:arial;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>The notes will be initially issued in book-entry form only. Notes issued in book-entry form will be evidenced by one or more
fully registered global securities deposited with or on behalf of The Depository Trust Company and registered in the name of The Depository Trust Company or its nominee. Interests in the global securities will be shown on, and transfers thereof will
be effected only through, records maintained by The Depository Trust Company (with respect to its participants) and its participants (with respect to beneficial owners). Except in limited circumstances, notes issued in book-entry form will not be
exchangeable for notes issued in registered certificated form.</FONT></TD>
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<TD VALIGN="TOP" style="font-family:arial;"><p style="font-family:arial;margin-top:12pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Trustee, registrar and paying agent</FONT></TD>
<TD VALIGN="TOP" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><p align=left style="font-family:arial;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>U.S. Bank National Association.</FONT></TD>
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<TD style="font-family:arial;"><p style="font-family:arial;margin-top:12pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Use of proceeds</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><p align=left style="font-family:arial;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>We estimate that our net proceeds from this offering will be approximately
$&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;million after deducting the underwriting discount and other estimated offering expenses payable by us. We intend to apply the net proceeds from this offering to repay amounts
outstanding under our revolving credit facility and for general business purposes, including funding in part the pending acquisition described above in "Recent developments" or other possible future acquisitions of properties, as more fully described
below under "Use of proceeds."</FONT></TD>
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<TD style="font-family:arial;"><p style="font-family:arial;margin-top:12pt;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Risk Factors</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><p align=left style="font-family:arial;margin-top:12pt;margin-left:0pt;text-indent:0pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Investing in the notes involves risks that are described in the "Risk Factors" section of our Annual
Report.</FONT></TD>
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 <p style="font-family:arial;"><font style="font-size:1pt;line-height:1pt;">&nbsp;</font></p>
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 <P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-3</FONT></P>

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<A HREF="#bg15403a_main_toc">Table of Contents</A> </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2><A
NAME="ce15403_warning_concerning_forward_looking_statements"> </A>
<A NAME="toc_ce15403_1"> </A>
<BR></FONT><FONT SIZE=2><B>  <A NAME="WC"></A>Warning concerning forward looking statements    <BR>    </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>THIS PROSPECTUS SUPPLEMENT, THE ACCOMPANYING PROSPECTUS, AND THE DOCUMENTS INCORPORATED HEREIN OR THEREIN BY REFERENCE CONTAIN STATEMENTS WHICH
CONSTITUTE FORWARD LOOKING STATEMENTS WITHIN THE MEANING OF THE PRIVATE SECURITIES LITIGATION REFORM ACT OF&nbsp;1995 AND OTHER SECURITIES LAWS. ALSO, WHENEVER WE USE WORDS SUCH AS "BELIEVE,"
"EXPECT," "ANTICIPATE," "INTEND," "PLAN," "ESTIMATE" OR SIMILAR EXPRESSIONS, WE ARE MAKING FORWARD LOOKING STATEMENTS. THESE FORWARD LOOKING STATEMENTS ARE BASED UPON OUR PRESENT INTENT, BELIEFS OR
EXPECTATIONS, BUT FORWARD LOOKING STATEMENTS ARE NOT GUARANTEED TO OCCUR AND MAY NOT OCCUR. FORWARD LOOKING STATEMENTS RELATE TO VARIOUS ASPECTS OF OUR BUSINESS,
INCLUDING:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>OUR ACQUISITIONS AND SALES OF PROPERTIES, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>OUR ABILITY TO COMPETE FOR ACQUISITIONS AND TENANCIES EFFECTIVELY, </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>OUR ABILITY TO RAISE EQUITY OR DEBT CAPITAL, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>OUR ABILITY TO PAY DISTRIBUTIONS TO OUR SHAREHOLDERS AND THE AMOUNT OF SUCH
DISTRIBUTIONS, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>OUR ABILITY TO RETAIN OUR EXISTING TENANTS, ATTRACT NEW TENANTS AND MAINTAIN
OR INCREASE CURRENT RENTAL RATES, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>THE CREDIT QUALITIES OF OUR TENANTS, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>OUR POLICIES AND PLANS REGARDING INVESTMENTS AND FINANCINGS, </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>THE FUTURE AVAILABILITY OF BORROWINGS UNDER OUR REVOLVING CREDIT FACILITY, </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>OUR ABILITY TO PAY INTEREST ON AND PRINCIPAL OF OUR DEBT, </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>OUR TAX STATUS AS A REIT, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>OUR BELIEF THAT FIVE STAR QUALITY CARE,&nbsp;INC., OR FIVE STAR, OUR
FORMER SUBSIDIARY, WHICH IS OUR LARGEST TENANT AND WHICH MANAGES CERTAIN OF OUR SENIOR LIVING COMMUNITIES FOR OUR ACCOUNT, HAS ADEQUATE FINANCIAL RESOURCES AND LIQUIDITY TO MEET ITS OBLIGATIONS TO US
AND TO MANAGE OUR SENIOR LIVING COMMUNITIES SUCCESSFULLY, AND </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>OTHER MATTERS. </FONT></DD></DL>
</UL>

<P style="font-family:arial;"><FONT SIZE=2>OUR
ACTUAL RESULTS MAY DIFFER MATERIALLY FROM THOSE CONTAINED IN OR IMPLIED BY OUR FORWARD LOOKING STATEMENTS AS A RESULT OF VARIOUS FACTORS. FACTORS THAT COULD HAVE A MATERIAL ADVERSE EFFECT ON OUR
FORWARD LOOKING STATEMENTS AND UPON OUR BUSINESS, RESULTS OF OPERATIONS, FINANCIAL CONDITION, FUNDS FROM OPERATIONS, NORMALIZED FUNDS FROM OPERATIONS, NOI, CASH BASIS NET OPERATING INCOME, CASH FLOWS,
LIQUIDITY AND PROSPECTS INCLUDE, BUT ARE NOT LIMITED TO:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>THE IMPACT OF CHANGES IN THE ECONOMY AND THE CAPITAL MARKETS ON US AND OUR
TENANTS AND MANAGERS, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>THE IMPACT OF THE PATIENT PROTECTION AND AFFORDABLE CARE ACT, AS AMENDED BY
THE HEALTH CARE AND EDUCATION RECONCILIATION ACT, OR COLLECTIVELY, THE ACA, AND OTHER EXISTING OR PROPOSED LEGISLATION OR REGULATIONS ON US, ON OUR TENANTS AND MANAGERS AND ON THEIR ABILITY TO PAY OUR
RENTS AND RETURNS, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>ACTUAL AND POTENTIAL CONFLICTS OF INTEREST WITH OUR MANAGING TRUSTEES, FIVE
STAR, RMR&nbsp;LLC, RMR&nbsp;INC., AFFILIATES INSURANCE COMPANY, OR AIC, D&amp;R YONKERS&nbsp;LLC, SELECT INCOME REIT, OR SIR, AND THEIR RELATED PERSONS AND ENTITIES, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>COMPLIANCE WITH, AND CHANGES TO, FEDERAL, STATE AND LOCAL LAWS AND
REGULATIONS, ACCOUNTING RULES, TAX LAWS AND SIMILAR MATTERS, </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-4</FONT></P>

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<UL>
<DL compact>
<DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>LIMITATIONS IMPOSED ON OUR BUSINESS AND OUR ABILITY TO SATISFY COMPLEX RULES
IN ORDER FOR US TO QUALIFY AS A REIT FOR U.S. FEDERAL INCOME TAX PURPOSES, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>COMPETITION WITHIN THE HEALTHCARE AND REAL ESTATE INDUSTRIES, AND </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>ACTS OF TERRORISM, OUTBREAKS OF SO CALLED PANDEMICS OR OTHER MANMADE OR
NATURAL DISASTERS BEYOND OUR CONTROL. </FONT></DD></DL>
</UL>

<P style="font-family:arial;"><FONT SIZE=2>FOR
EXAMPLE:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>FIVE STAR IS OUR LARGEST TENANT AND MANAGES CERTAIN OF OUR SENIOR LIVING
COMMUNITIES FOR OUR ACCOUNT AND FIVE STAR MAY EXPERIENCE FINANCIAL DIFFICULTIES AS A RESULT OF A NUMBER OF FACTORS, INCLUDING, BUT NOT LIMITED TO:</FONT><FONT SIZE=2>
<BR><BR></FONT></DD></DL>
</UL>
<DL compact>
<DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>MATERIAL WEAKNESSES IN ITS INTERNAL CONTROLS, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>CHANGES IN MEDICARE AND MEDICAID PAYMENTS, INCLUDING THOSE THAT MAY RESULT
FROM THE ACA AND EXISTING OR PROPOSED LEGISLATION OR REGULATIONS, WHICH COULD RESULT IN REDUCED RATES OR A FAILURE OF SUCH RATES TO COVER FIVE STAR'S COSTS, </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>CHANGES IN REGULATIONS AFFECTING FIVE STAR'S OPERATIONS, </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>CHANGES IN THE ECONOMY GENERALLY OR GOVERNMENTAL POLICIES WHICH REDUCE THE
DEMAND FOR THE SERVICES FIVE STAR OFFERS, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>INCREASES IN INSURANCE AND TORT LIABILITY AND OTHER COSTS, </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>INEFFECTIVE INTEGRATION OF NEW ACQUISITIONS AND LEASED AND MANAGED
COMMUNITIES, AND </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>INSUFFICIENT ACCESS TO CAPITAL AND FINANCING, </FONT><FONT SIZE=2>
<BR><BR></FONT>
<DL compact>
<DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>IF FIVE STAR'S OPERATIONS BECOME UNPROFITABLE, FIVE STAR MAY BECOME UNABLE
TO PAY OUR RENTS AND WE MAY NOT RECEIVE OUR EXPECTED RETURN ON OUR INVESTED CAPITAL OR ADDITIONAL AMOUNTS FROM OUR SENIOR LIVING COMMUNITIES THAT ARE MANAGED BY FIVE STAR, </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>OUR ABILITY TO MAKE FUTURE DISTRIBUTIONS AND TO MAKE PAYMENTS OF PRINCIPAL
AND INTEREST ON OUR NOTES OR OUR OTHER INDEBTEDNESS DEPENDS UPON A NUMBER OF FACTORS, INCLUDING OUR FUTURE EARNINGS, THE CAPITAL COSTS WE INCUR TO LEASE AND OPERATE OUR PROPERTIES AND OUR WORKING
CAPITAL REQUIREMENTS. WE MAY BE UNABLE TO PAY OUR DEBT OBLIGATIONS OR TO MAINTAIN OUR CURRENT RATE OF DISTRIBUTIONS ON OUR COMMON SHARES AND FUTURE DISTRIBUTIONS MAY BE REDUCED OR ELIMINATED, </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>OUR ABILITY TO GROW OUR BUSINESS AND INCREASE OUR DISTRIBUTIONS DEPENDS IN
LARGE PART UPON OUR ABILITY TO BUY PROPERTIES AND ARRANGE FOR THEIR PROFITABLE OPERATION OR LEASE THEM FOR RENTS, LESS PROPERTY OPERATING EXPENSES, THAT EXCEED OUR CAPITAL COSTS. WE MAY BE UNABLE TO
IDENTIFY PROPERTIES THAT WE WANT TO ACQUIRE OR TO NEGOTIATE ACCEPTABLE PURCHASE PRICES, ACQUISITION FINANCING, MANAGEMENT CONTRACTS OR LEASE TERMS FOR NEW PROPERTIES, </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>OUR TENANTS MAY EXPERIENCE LOSSES AND BECOME UNABLE TO PAY OUR RENTS, </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>CONTINUED AVAILABILITY OF BORROWINGS UNDER OUR REVOLVING CREDIT FACILITY IS
SUBJECT TO OUR SATISFYING CERTAIN FINANCIAL COVENANTS AND MEETING OTHER CUSTOMARY CREDIT FACILITY CONDITIONS THAT WE MAY BE UNABLE TO SATISFY, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>ACTUAL COSTS UNDER OUR REVOLVING CREDIT FACILITY OR OTHER FLOATING RATE
CREDIT FACILITIES WILL BE HIGHER THAN LIBOR PLUS A PREMIUM BECAUSE OF OTHER FEES AND EXPENSES ASSOCIATED WITH SUCH FACILITIES, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>THE MAXIMUM BORROWING AVAILABILITY UNDER OUR REVOLVING CREDIT FACILITY AND
TERM LOAN MAY BE INCREASED TO UP TO $2.2 BILLION ON A COMBINED BASIS IN CERTAIN CIRCUMSTANCES. HOWEVER, INCREASING THE MAXIMUM BORROWING AVAILABILITY UNDER </FONT></DD></DL>
</DD></DL>
<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-5</FONT></P>

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<UL>
<UL>

<P style="font-family:arial;"><FONT SIZE=2>OUR
REVOLVING CREDIT FACILITY AND TERM LOAN IS SUBJECT TO OUR OBTAINING ADDITIONAL COMMITMENTS FROM LENDERS, WHICH MAY NOT OCCUR, </FONT></P>

</UL>
<DL compact>
<DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>WE HAVE THE OPTION TO EXTEND THE MATURITY DATE OF OUR REVOLVING CREDIT
FACILITY UPON PAYMENT OF A FEE AND MEETING CERTAIN OTHER CONDITIONS. HOWEVER, THE APPLICABLE CONDITIONS MAY NOT BE MET, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>THE MARGINS USED TO DETERMINE THE INTEREST RATE PAYABLE ON OUR REVOLVING
CREDIT FACILITY AND TERM LOAN AND THE FACILITY FEE PAYABLE ON OUR REVOLVING CREDIT FACILITY ARE BASED ON OUR CREDIT RATINGS. FUTURE CHANGES IN OUR CREDIT RATINGS MAY CAUSE THE INTEREST AND FEES WE PAY
TO CHANGE, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>CONTINGENCIES IN OUR ACQUISITION AND SALE AGREEMENTS MAY NOT BE SATISFIED
AND OUR PENDING SALES OR ACQUISITIONS AND ANY RELATED MANAGEMENT AGREEMENTS MAY NOT OCCUR, MAY BE DELAYED OR THE TERMS OF SUCH TRANSACTIONS MAY CHANGE, </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>WE CURRENTLY EXPECT TO COMPLETE THE ACQUISITION OF ONE SENIOR LIVING
COMMUNITY IN 2015. HOWEVER, THE PURCHASE AGREEMENT CONTAINS VARIOUS CLOSING CONDITIONS AND THE CLOSING MAY NOT OCCUR, MAY BE DELAYED OR THE TERMS MAY CHANGE, </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>WE MAY BE UNABLE TO REPAY OUR DEBT OBLIGATIONS WHEN THEY BECOME DUE, </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>SOME OF OUR TENANTS MAY NOT RENEW EXPIRING LEASES, AND WE MAY BE UNABLE TO
LOCATE NEW TENANTS TO MAINTAIN OR INCREASE THE HISTORICAL OCCUPANCY RATES OF, OR RENTS FROM, OUR PROPERTIES, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>RENTS THAT WE CAN CHARGE AT OUR PROPERTIES MAY DECLINE BECAUSE OF CHANGING
MARKET CONDITIONS OR OTHERWISE, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>AS OF MARCH&nbsp;31, 2015, APPROXIMATELY 97% OF OUR NOI WAS GENERATED FROM
PROPERTIES WHERE A MAJORITY OF THE NOI IS DERIVED FROM OUR TENANTS' AND RESIDENTS' PRIVATE RESOURCES. THIS MAY IMPLY THAT WE WILL MAINTAIN OR INCREASE THE PERCENTAGE OF OUR NOI GENERATED FROM PRIVATE
RESOURCES AT OUR SENIOR LIVING COMMUNITIES. HOWEVER, RESIDENTS' AND PATIENTS' ABILITY TO FUND CHARGES WITH PRIVATE RESOURCES MAY BECOME MORE LIMITED IN THE FUTURE AND WE MAY BE REQUIRED OR MAY ELECT
FOR BUSINESS REASONS TO ACCEPT OR PURSUE REVENUES FROM GOVERNMENT PAY SOURCES, WHICH COULD RESULT IN AN INCREASED PART OF OUR NOI BEING GENERATED FROM GOVERNMENT PAYMENTS, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>WE HAD THREE PROPERTIES (THREE BUILDINGS) CLASSIFIED AS HELD FOR SALE AS OF
JULY&nbsp;15, 2015. WE MAY NOT BE ABLE TO SELL THESE PROPERTIES ON TERMS ACCEPTABLE TO US OR OTHERWISE, </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>OUR AMENDED MANAGEMENT AGREEMENTS HAVE BEEN FURTHER AMENDED AND EXTENDED
UNTIL 2035. THE MANAGEMENT AGREEMENTS INCLUDE TERMS WHICH PERMIT EARLY TERMINATION IN CERTAIN CIRCUMSTANCES. ACCORDINGLY, THERE CAN BE NO ASSURANCE THAT THESE AGREEMENTS WILL REMAIN IN EFFECT FOR 20
YEARS OR FOR SHORTER OR LONGER TERMS, AND </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>WE BELIEVE THAT OUR RELATIONSHIPS WITH OUR RELATED PARTIES, INCLUDING FIVE
STAR, RMR&nbsp;LLC, RMR&nbsp;INC., AIC, D&amp;R YONKERS&nbsp;LLC, SIR AND OTHERS AFFILIATED WITH THEM MAY BENEFIT US AND PROVIDE US WITH COMPETITIVE ADVANTAGES IN OPERATING AND GROWING OUR BUSINESS.
IN FACT, THE ADVANTAGES WE BELIEVE WE MAY REALIZE FROM THESE RELATIONSHIPS MAY NOT MATERIALIZE. </FONT></DD></DL>
</UL>

<P style="font-family:arial;"><FONT SIZE=2>THESE
RESULTS COULD OCCUR DUE TO MANY DIFFERENT CIRCUMSTANCES, SOME OF WHICH ARE BEYOND OUR CONTROL, SUCH AS CHANGED MEDICARE AND MEDICAID RATES, NEW LEGISLATION OR REGULATIONS AFFECTING OUR BUSINESS
OR THE BUSINESSES OF OUR TENANTS OR MANAGERS, CHANGES IN OUR TENANTS' OR MANAGERS' REVENUES OR COSTS, CHANGES IN OUR TENANTS' OR MANAGERS' FINANCIAL CONDITIONS, ACTS OF TERRORISM, NATURAL DISASTERS OR
CHANGES IN CAPITAL MARKETS OR THE ECONOMY GENERALLY. </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-6</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2>THE
INFORMATION CONTAINED ELSEWHERE IN THIS PROSPECTUS SUPPLEMENT AND IN OUR FILINGS WITH THE SEC, INCLUDING UNDER THE CAPTION "RISK FACTORS," OR INCORPORATED HEREIN OR THEREIN, IDENTIFIES OTHER
IMPORTANT FACTORS THAT COULD CAUSE DIFFERENCES FROM OUR FORWARD LOOKING STATEMENTS. OUR FILINGS WITH THE SEC ARE AVAILABLE ON THE SEC'S WEBSITE AT WWW.SEC.GOV. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>YOU
SHOULD NOT PLACE UNDUE RELIANCE UPON OUR FORWARD LOOKING STATEMENTS. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>EXCEPT
AS REQUIRED BY LAW, WE DO NOT INTEND TO UPDATE OR CHANGE ANY FORWARD LOOKING STATEMENTS AS A RESULT OF NEW INFORMATION, FUTURE EVENTS OR OTHERWISE. </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-7</FONT></P>

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<A HREF="#bg15403a_main_toc">Table of Contents</A> </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2><A
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<BR></FONT><FONT SIZE=2><B>  <A NAME="UP"></A>Use of proceeds    <BR>    </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>We estimate that our net proceeds from this offering, after deducting the underwriting discount and other estimated offering expenses payable by us,
will be approximately $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;million. We intend to apply the net proceeds from this offering to repay amounts outstanding under our
revolving credit facility and for general business
purposes, including funding in part the pending acquisition described above in "Recent developments" or other possible future acquisitions of properties. Pending such application, we may invest the
net proceeds in short term investments, some or all of which may not be investment grade rated. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>Affiliates
of some of the underwriters, including Citigroup Global Markets&nbsp;Inc., RBC Capital Markets,&nbsp;LLC, UBS Securities&nbsp;LLC and Wells Fargo Securities,&nbsp;LLC, are lenders
under our revolving credit facility and will receive a portion of the net proceeds from this offering used to repay amounts outstanding thereunder. Our revolving credit facility matures in January
2018, and outstanding borrowings under the facility bear interest at LIBOR plus 130 basis points. At July&nbsp;15, 2015, the weighted average interest payable on our revolving credit facility was
1.48% per year. Amounts repaid under the facility may be re-borrowed in the future. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>At
July&nbsp;15, 2015, we had $585.0&nbsp;million outstanding under our revolving credit facility. The proceeds of those borrowings were used to fund acquisitions, including the acquisitions
described above in "Recent developments," and for general business purposes. </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-8</FONT></P>

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NAME="cg15403_ratio_of_earnings_to_fixed_charges"> </A>
<A NAME="toc_cg15403_2"> </A>
<BR></FONT><FONT SIZE=2><B>  <A NAME="ROE"></A>Ratio of earnings to fixed charges    <BR>    </B></FONT></P>


<P style="font-family:arial;"><FONT SIZE=2>The following table sets forth our ratio of earnings to fixed charges for each of the periods shown. </FONT></P>

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<TH ALIGN="LEFT" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT><BR></TH>
<TH ROWSPAN=2 style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TH>
<TH COLSPAN=2 ROWSPAN=2 ALIGN="CENTER" style="font-family:arial;border-bottom:solid #000000 1.0pt;"><FONT  style="font-size:8pt;line-height:9pt;"><B>Three Months<BR>
Ended<BR>
March&nbsp;31,<BR>
2015 </B></FONT></TH>
<TH style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TH>
<TH COLSPAN=14 ALIGN="CENTER" style="font-family:arial;border-bottom:solid #000000 1.0pt;"><FONT  style="font-size:8pt;line-height:9pt;"><B>Year Ended December&nbsp;31, </B></FONT></TH>
<TH style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TH>
</TR>
<TR VALIGN="BOTTOM">
<TH ALIGN="LEFT" style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT><BR></TH>
<TH style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:arial;border-bottom:solid #000000 1.0pt;"><FONT  style="font-size:8pt;line-height:9pt;"><B>2014 </B></FONT></TH>
<TH style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:arial;border-bottom:solid #000000 1.0pt;"><FONT  style="font-size:8pt;line-height:9pt;"><B>2013 </B></FONT></TH>
<TH style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:arial;border-bottom:solid #000000 1.0pt;"><FONT  style="font-size:8pt;line-height:9pt;"><B>2012 </B></FONT></TH>
<TH style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:arial;border-bottom:solid #000000 1.0pt;"><FONT  style="font-size:8pt;line-height:9pt;"><B>2011 </B></FONT></TH>
<TH style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:arial;border-bottom:solid #000000 1.0pt;"><FONT  style="font-size:8pt;line-height:9pt;"><B>2010 </B></FONT></TH>
<TH style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TH>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD VALIGN="BOTTOM" style="font-family:arial;"><p style="font-family:arial;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Ratio of earnings to fixed charges</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>2.1x</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>2.2x</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>2.6x</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>2.1x</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>2.5x</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>2.5x</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
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<P style="font-family:arial;"><FONT SIZE=2>For
purposes of calculating the ratios above, earnings have been calculated by adding fixed charges to income from continuing operations (including gains on sales of properties, if any) before income
tax expense and equity in earnings (losses) of an investee. Fixed charges consist of interest expense (including net amortization of debt discounts, premiums and deferred financing fees). After giving
effect to this offering and the application of the net proceeds as described in "Use of proceeds," the ratio of earnings to fixed charges would have been&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;x&nbsp;for the three months
ended March&nbsp;31, 2015 and&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;x&nbsp;for the fiscal year ended December&nbsp;31, 2014. </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-9</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2><A
HREF="#bg15403a_main_toc">Table of Contents</A></FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2><A
NAME="cg15403_description_of_notes"> </A>
<A NAME="toc_cg15403_3"> </A>
<BR></FONT><FONT SIZE=2><B>  <A NAME="DN"></A>Description of notes    <BR>    </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>The following description of the particular terms of the notes supplements and, to the extent inconsistent with, replaces the description of the
general terms and provisions of debt securities set forth under "Description of debt securities" in the accompanying prospectus. We have provided a Glossary at the end of this prospectus supplement to
define certain capitalized words used in discussing the terms of the notes. References in this section and in the Glossary to "we," "us," "our," "Senior Housing" and the "Company" mean Senior Housing
Properties Trust and not its subsidiaries. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> General  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>We will issue the notes under an Indenture dated as of July&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;, 2015, and a separate Supplemental Indenture thereto, together, the
Indenture, between us and U.S. Bank National Association. The Indenture is subject to, and governed by, the Trust Indenture Act of 1939, as amended. This prospectus supplement briefly outlines some of
the provisions of the Indenture. These summaries are not complete. If you would like more information on these provisions, review the copy of the Indenture that we will file with the SEC. See "Where
you can find more information" in this prospectus supplement and the accompanying prospectus. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>The
notes will be a separate series under the Indenture, initially in the aggregate principal amount of $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;million. The Indenture does not limit the amount of
debt securities that
we may issue thereunder. We may issue debt securities of a different series or we may reopen this series of notes and, from time to time, issue additional notes of the same series, in each case
without the consent of holders of the notes. Any additional notes of the same series would have the same terms as the notes offered hereby (except for the issue date, the public offering price and, if
applicable, the first interest payment date and related interest accrual date) and would rank equally with the notes offered hereby; provided that if such additional notes are not fungible with the
notes offered hereby for U.S. federal income tax purposes, or to the extent required by applicable securities laws or regulations or procedures of The Depository Trust Company, or "DTC," such
additional notes would have a different CUSIP number. Unless the context otherwise requires, references herein to "notes" are deemed to include any additional notes actually issued. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>The
notes will be issued only in fully registered form without coupons, in denominations of $2,000 and integral multiples of $1,000 in excess thereof. The notes will be evidenced by one or more global
notes in book-entry form, except under the limited circumstances described below under "&#151;Book-Entry System and Form of Notes." </FONT></P>


<P style="font-family:arial;"><FONT SIZE=2>The
notes will be our senior unsecured obligations and will rank equally with all of our other unsecured and unsubordinated indebtedness outstanding from time to time. The notes will not be guaranteed
by our subsidiaries. The notes will be effectively subordinated to our mortgages and other secured indebtedness, and to all liabilities of our subsidiaries. Accordingly, such prior indebtedness will
have to be satisfied in full before you will be able to realize any value from our encumbered or indirectly held properties. As of March&nbsp;31, 2015, the total indebtedness of our subsidiaries was
$625.1&nbsp;million. Our outstanding other indebtedness is described below under "Description of other indebtedness." </FONT></P>


<P style="font-family:arial;"><FONT SIZE=2>We
and our subsidiaries may also incur additional indebtedness, including secured indebtedness, subject to the provisions described below under "&#151;Certain Covenants&#151;Limitations
on Incurrence of Debt." </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>Except
as described below under "&#151;Certain Covenants" and "&#151;Merger, Consolidation or Sale of Assets" and under "Description of debt securities&#151;Merger, Consolidation
or Sale of Assets" in the accompanying prospectus, the Indenture does not contain any provisions that would limit our ability to incur indebtedness or that would afford you protection in the event of
(1)&nbsp;a highly leveraged or similar transaction involving us or any of our affiliates, (2)&nbsp;a change of control or (3)&nbsp;a reorganization, restructuring, merger or similar transaction
involving us that may adversely affect you. In addition, subject to the limitations set forth below </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-10</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2><A
HREF="#bg15403a_main_toc">Table of Contents</A></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>under
"&#151;Certain Covenants" and "&#151;Merger, Consolidation or Sale of Assets" and under "Description of debt securities&#151;Merger, Consolidation or Sale of Assets" in the
accompanying prospectus, we may, in the future, enter into transactions such as the sale of all or substantially all of our assets or a merger or consolidation that would increase the amount of our
indebtedness or substantially reduce or eliminate our assets, which might have an adverse effect on our ability to service our indebtedness, including the notes. We have no present intention of
engaging in a highly leveraged or similar transaction. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> Interest and Maturity  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>The notes will bear interest at the rate per annum set forth on the cover page of this prospectus supplement from, and including,
July&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;, 2015, or from, and including, the immediately preceding interest payment date to which interest has been paid. Interest on the notes is payable semi-annually in arrears on
February&nbsp;1 and August&nbsp;1 of each year, commencing February&nbsp;1, 2016, to the persons in whose names the notes are registered at the close of business on January&nbsp;15 or
July&nbsp;15, as the case may be, immediately before the relevant interest payment date. Accrued interest is also payable on the date of maturity or earlier redemption of the notes. Interest on the
notes will be computed on the basis of a 360-day year of twelve 30-day months. If any interest payment date, maturity date or redemption date falls on a day that is not a Business Day, the payment
will be made on the next Business Day and no interest will accrue for the period from and after such interest payment date, maturity date or redemption date. The notes will mature (unless previously
redeemed) on August&nbsp;1, 2025. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>Payments
of principal, premium, if any, and interest to holders of book-entry interests in notes in global form will be made in accordance with the procedures of DTC and its participants in effect
from time to time. See "&#151;Book-Entry System and Form of Notes" below and "Description of Debt Securities&#151;Global Debt Securities" in the accompanying prospectus. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> Optional Redemption of the Notes  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>We may redeem the notes in whole at any time or in part from time to time before they mature. The redemption price for the notes will equal the
outstanding principal amount of the notes being redeemed plus accrued and unpaid interest and the Make-Whole Amount, if any. If the notes are redeemed on or after February&nbsp;1, 2025 (six months
prior to their stated maturity date), the Make-Whole Amount will be zero. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>We
are required to give notice of such a redemption not less than 30&nbsp;days nor more than 60&nbsp;days prior to the redemption date to each holder's address appearing in the securities register
maintained by the Trustee or, in the case of book-entry interests in notes in global form, in accordance with the procedures of DTC and its participants in effect from time to time. In the event we
elect to redeem less than all of the notes, the particular notes to be redeemed will be selected by the Trustee by such method as the Trustee shall deem appropriate and in accordance with the
procedures of DTC and its participants in effect from time to time. See "&#151;Book-Entry System and Form of Notes" below and "Description of debt securities&#151;Global Debt Securities"
in the accompanying prospectus. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> Certain Covenants  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I> Limitations on Incurrence of Debt.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;We will not, and will not permit any Subsidiary to, incur any additional Debt if, immediately after giving effect to the
incurrence of such additional Debt and the application of the proceeds therefrom, the aggregate principal amount of all of our and our Subsidiaries' outstanding Debt on a consolidated basis determined
in accordance with GAAP is greater than 60% of the sum of (without duplication): </FONT></P>

<UL>

<P style="font-family:arial;"><FONT SIZE=2>(1)&nbsp;&nbsp;our
Total Assets as of the end of the fiscal quarter covered by our Annual Report, or our Quarterly Report on Form&nbsp;10-Q, as the case may be, most recently filed with the SEC
(or, if such filing is not permitted or required under the Exchange Act, with the Trustee) prior to the incurrence of such additional Debt; and </FONT></P>

</UL>
<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-11</FONT></P>

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<A NAME="page_cg15403_1_12"> </A>

<P style="font-family:arial;"><FONT SIZE=2><A
HREF="#bg15403a_main_toc">Table of Contents</A></FONT></P>

<UL>

<P style="font-family:arial;"><FONT SIZE=2>(2)&nbsp;&nbsp;the
purchase price of any real estate assets or mortgages receivable acquired, and the amount of any securities offering proceeds received (to the extent that such proceeds were not
used to acquire real estate assets or mortgages receivable or used to reduce Debt), by us or any Subsidiary since the end of such fiscal quarter, including those proceeds obtained in connection with
the incurrence of such additional Debt. </FONT></P>

</UL>

<P style="font-family:arial;"><FONT SIZE=2>The
sum of (1) and (2) above is referred to as our Adjusted Total Assets. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>In
addition to the above limitations on the incurrence of Debt, we will not, and will not permit any Subsidiary to, incur any additional Secured Debt if, immediately after giving effect to the
incurrence of such additional Secured Debt and the application of the proceeds therefrom, the aggregate principal amount of all our and our Subsidiaries' outstanding Secured Debt on a consolidated
basis determined in accordance with GAAP is greater than 40% of Adjusted Total Assets. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>In
addition to the above limitations on the incurrence of Debt, we will not, and will not permit any Subsidiary to, incur any additional Debt if, immediately after giving effect to the incurrence of
such additional Debt and on a pro forma basis, including the application of the proceeds therefrom, the ratio of Consolidated Income Available
for Debt Service to Annual Debt Service for the four consecutive fiscal quarters most recently ended prior to the date on which such additional Debt is to be incurred is less than 1.5 to 1.0,
calculated on the assumptions that: </FONT></P>

<UL>

<P style="font-family:arial;"><FONT SIZE=2>(1)&nbsp;&nbsp;such
Debt and any other Debt incurred by us and our Subsidiaries on a consolidated basis since the first day of such four-quarter period and the application of the proceeds therefrom,
including to refinance other Debt, had occurred at the beginning of such period; </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>(2)&nbsp;&nbsp;the
repayment, retirement or other discharge of any other Debt by us and our Subsidiaries on a consolidated basis since the first date of such four-quarter period had occurred at the
beginning of such period (except that, in making such computation, the amount of Debt under any revolving credit facility shall be computed based upon the average daily balance of such Debt during
such period); </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>(3)&nbsp;&nbsp;in
the case of Acquired Debt or Debt incurred in connection with or in contemplation of any acquisition, including any Person becoming a Subsidiary, since the first day of such
four-quarter period, the related acquisition had occurred as of the first day of such period with appropriate adjustments with respect to such acquisition being included in such pro forma calculation;
and </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>(4)&nbsp;&nbsp;in
the case of any acquisition or disposition by us and our Subsidiaries on a consolidated basis of any asset or group of assets since the first day of such four-quarter period,
whether by merger, stock purchase or sale, or asset purchase or sale, such acquisition or disposition or any related repayment of Debt had occurred as of the first day of such period with the
appropriate adjustments with respect to such acquisition or disposition being included in such pro forma calculation. </FONT></P>

</UL>

<P style="font-family:arial;"><FONT SIZE=2>If
the Debt giving rise to the need to make the foregoing calculation or any other Debt incurred after the first day of the relevant four-quarter period bears interest at a floating interest rate
then, for purposes of calculating the Annual Debt Service, the interest rate on such Debt will be computed on a pro forma basis as if the average interest rate which would have been in effect during
the entire such four-quarter period had been the applicable rate for the entirety of such period. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I> Maintenance of Total Unencumbered Assets.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;We and our Subsidiaries will at all times maintain Total Unencumbered Assets of not less than 150% of the aggregate
outstanding principal amount of our and our Subsidiaries' Unsecured Debt on a consolidated basis in accordance with GAAP. </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-12</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2><A
HREF="#bg15403a_main_toc">Table of Contents</A></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> Merger, Consolidation or Sale of Assets  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>Under the Indenture, we may not consolidate with or merge into any other person or convey, transfer or lease all or substantially all of our
properties and assets to any other person (other than one of our direct or indirect wholly owned Subsidiaries), and we may not permit any other person (other than one of our direct or indirect wholly
owned Subsidiaries) to consolidate with or merge into us, unless:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>we are the surviving entity or, in case we consolidate with or merge into
another person, the person formed by such consolidation or merger is, or in case we convey, transfer or lease all or substantially all of our properties and assets to any person, such acquiring person
is, an entity organized and validly existing under the laws of the United States of America, any state thereof or the District of Columbia and expressly assumes, by a supplemental indenture executed
and delivered to the Trustee, in form satisfactory to the trustee, the due and punctual payment of the principal of and any premium and interest on all applicable debt securities issued under the
applicable indenture and the performance or observance of every covenant of the applicable indenture on our part to be performed or observed; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>immediately after giving effect to such transaction, and treating any
indebtedness which becomes an obligation of us or any of our Subsidiaries as a result of such transaction as having been incurred by us or such Subsidiary at the time of such transaction, no event of
default, and no event which, after notice or lapse of time or both, would become an event of default, in each case under the Indenture, has happened and is continuing; and </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>we have delivered to the Trustee an officer's certificate and an opinion of
counsel, each stating that such consolidation, merger, conveyance, transfer or lease and, if a supplemental indenture is required in connection with such transaction, such supplemental indenture
comply with the Indenture provisions described in this paragraph and that all conditions precedent provided for in the Indenture relating to such transaction have been complied with. </FONT></DD></DL>
</UL>

<P style="font-family:arial;"><FONT SIZE=2><B> Events of Default, Notice and Waiver  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>The Indenture for the notes provides that the term "event of default" for the notes means any of the
following:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>We do not pay the principal of or any premium on the notes when due and
payable; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>We do not pay interest on the notes within 30&nbsp;days after the
applicable due date; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>We remain in breach of any other covenant of the Indenture with respect to
the notes (not including a covenant added to the Indenture solely for the benefit of a series of debt other than the notes) for 60&nbsp;days after we receive a notice of default stating we are in
breach and requiring that it be remedied; only the Trustee or holders of more than 25% in aggregate principal amount of outstanding notes may send the notice; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>We default under any of our other indebtedness in an aggregate principal
amount exceeding $50&nbsp;million after the expiration of any applicable grace period, which default results in the acceleration of the maturity of such indebtedness; such default is not an event of
default if the other indebtedness is discharged, or the acceleration is rescinded or annulled, within a period of 10&nbsp;days after we receive notice specifying the default and requiring that we
discharge the other indebtedness or cause the acceleration to be rescinded or annulled; only the Trustee or holders of more than 25% in aggregate principal amount of the outstanding notes may send the
notice; or </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>We or one of our Significant Subsidiaries, if any, experiences specified
events of bankruptcy, insolvency or reorganization. </FONT></DD></DL>
</UL>

<P style="font-family:arial;"><FONT SIZE=2>Upon
acceleration of the notes in accordance with the terms of the Indenture following the occurrence of an event of default, the principal amount of the notes, plus accrued and unpaid interest
thereon, will become due and payable. </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-13</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2><A
HREF="#bg15403a_main_toc">Table of Contents</A></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>The
term "Significant Subsidiary" means each of our significant subsidiaries, if any, as defined in Regulation&nbsp;S-X under the Securities Act of 1933, as amended, or the Securities Act. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> Modification of the Indenture  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>The accompanying prospectus contains a description of our ability to modify the Indenture or the notes under the heading "Description of debt
securities&#151;Modification of an Indenture." Some types of changes require the consent of each holder of the notes affected by the change, other types require the consent of the holders of a
majority of the principal amount of outstanding notes affected by the change, and other types do not require the consent of any holders of the notes. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> Sinking Fund  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>The notes are not entitled to any sinking fund payments. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> The Registrar and Paying Agent  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>We have initially designated U.S. Bank National Association as the registrar and paying agent for the notes. Payments of interest and principal will
be made, and the notes will be transferable, at the office of the paying agent, or at such other place or places as may be designated pursuant to the Indenture. For notes which we issue in book-entry
form evidenced by a global note, payments will be made to DTC. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> Discharge, Defeasance and Covenant Defeasance  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>The provisions of the Indenture relating to defeasance and covenant defeasance described under "Description of debt securities&#151;Discharge,
Defeasance and Covenant Defeasance" in the accompanying prospectus will apply to the notes. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> Book-Entry System and Form of Notes  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>The notes will initially be issued in the form of one or more fully registered global notes without coupons that will be deposited with or on behalf
of DTC and registered in the name of its nominee, Cede&nbsp;&amp;&nbsp;Co. This means that we will not issue certificates to each holder of notes. Each global note will be issued to DTC, which will
keep a computerized record of its participants (for example, your broker) whose clients have purchased the notes. The participant will then keep a record of its clients who purchased the notes. Unless
it is exchanged in whole or in part for a certificated note, each global note may not be transferred, except that DTC, its nominees, and their successors may transfer a global note in whole to one
another. Beneficial interests in a global note will be shown on, and transfers of a global note will be made only through, records maintained by DTC and its participants. Additional information about
notes in global form, DTC and the book-entry system is contained in the accompanying prospectus under the heading "Description of Debt Securities&#151;Global Debt Securities." </FONT></P>


<P style="font-family:arial;"><FONT SIZE=2>Investors
may elect to hold their interest in the global notes through either DTC, Clearstream Banking, soci&eacute;t&eacute; anonyme, or Clearstream, or Euroclear
Bank&nbsp;S.A./N.V., or Euroclear, if they are participants in these systems, or indirectly through organizations which are participants in these systems. Clearstream and Euroclear will hold
interests on behalf of their participants though customers' securities accounts in Clearstream and Euroclear's names on the books of their respective depositaries, which in turn will hold interests in
customers' securities accounts in the depositaries' names on the books of DTC. At the present time, Citibank, N.A. acts as U.S. depositary for Clearstream and JPMorgan Chase Bank, N.A. acts as U.S.
depositary for Euroclear. </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-14</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2><A
HREF="#bg15403a_main_toc">Table of Contents</A></FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2><A
NAME="cg15403_description_of_other_indebtedness"> </A>
<A NAME="toc_cg15403_4"> </A>
<BR></FONT><FONT SIZE=2><B>  <A NAME="DO"></A>Description of other indebtedness    <BR>    </B></FONT></P>


<P style="font-family:arial;"><FONT SIZE=2>The following table summarizes our other indebtedness on a consolidated basis at March&nbsp;31, 2015 (dollars in thousands): </FONT></P>

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<p style="font-family:arial;"></FONT></P>

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<TR><!-- TABLE COLUMN WIDTHS SET -->
<TD WIDTH="" style="font-family:arial;"></TD>
<TD WIDTH="12pt" style="font-family:arial;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:arial;"></TD>
<TD WIDTH="67pt" style="font-family:arial;"></TD>
<TD WIDTH="12pt" style="font-family:arial;"></TD>
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<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:arial;"><p style="font-family:arial;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Unsecured revolving credit facility</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:arial;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><FONT SIZE=2>&#151;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:arial;"><p style="font-family:arial;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Unsecured term loan</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><FONT SIZE=2>350,000</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:arial;"><p style="font-family:arial;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Senior unsecured notes, net of discount of $6,017</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><FONT SIZE=2>1,743,983</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="BOTTOM">
<TD style="font-family:arial;"><p style="font-family:arial;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Secured debt and capital leases</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><FONT SIZE=2>625,131</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR style="font-size:1.5pt;" bgcolor="#FFFFFF"  VALIGN="BOTTOM">
<TD style="line-height:0pt;font-family:arial;">


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&nbsp;</TD>
<TD style="line-height:0pt;font-family:arial;">&nbsp;</TD>
<TD COLSPAN=2 ALIGN="RIGHT" style="line-height:0pt;font-family:arial;border-bottom:solid #000000 1.0pt;">&nbsp;</TD>
<TD style="line-height:0pt;font-family:arial;">&nbsp;</TD>
</TR>
<TR bgcolor="#FFFFFF"  VALIGN="BOTTOM">
<TD style="line-height:0.1pt;font-family:arial;"><FONT SIZE=2>


<!-- COMMAND=ADD_ROWSHADECOLOR,"#FFFFFF" -->




<!-- COMMAND=ADD_GUTTERGRID,"line-height:0.1pt;" -->


 </font>&#8203;<font></FONT></TD>
<TD style="line-height:0.1pt;font-family:arial;"><FONT SIZE=2></font>&#8203;<font></FONT></TD>
<TD style="line-height:0.1pt;font-family:arial;"><FONT SIZE=2></font>&#8203;<font></FONT></TD>
<TD ALIGN="RIGHT" style="line-height:0.1pt;font-family:arial;"><FONT SIZE=2></font>&#8203;<font></FONT></TD>
<TD style="line-height:0.1pt;font-family:arial;"><FONT SIZE=2></font>&#8203;<font></FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="BOTTOM">
<TD style="font-family:arial;"><p style="font-family:arial;margin-left:18pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Total</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:arial;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><FONT SIZE=2>2,719,114</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR style="font-size:1.5pt;" bgcolor="#FFFFFF"  VALIGN="BOTTOM">
<TD style="line-height:0pt;font-family:arial;">


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&nbsp;</TD>
<TD style="line-height:0pt;font-family:arial;">&nbsp;</TD>
<TD COLSPAN=2 ALIGN="RIGHT" style="line-height:0pt;font-family:arial;border-bottom:solid #000000 1.0pt;">&nbsp;</TD>
<TD style="line-height:0pt;font-family:arial;">&nbsp;</TD>
</TR>
<TR bgcolor="#FFFFFF"  VALIGN="BOTTOM">
<TD style="line-height:0.1pt;font-family:arial;"><FONT SIZE=2>


<!-- COMMAND=ADD_ROWSHADECOLOR,"#FFFFFF" -->




<!-- COMMAND=ADD_GUTTERGRID,"line-height:0.1pt;" -->


 </font>&#8203;<font></FONT></TD>
<TD style="line-height:0.1pt;font-family:arial;"><FONT SIZE=2></font>&#8203;<font></FONT></TD>
<TD style="line-height:0.1pt;font-family:arial;"><FONT SIZE=2></font>&#8203;<font></FONT></TD>
<TD ALIGN="RIGHT" style="line-height:0.1pt;font-family:arial;"><FONT SIZE=2></font>&#8203;<font></FONT></TD>
<TD style="line-height:0.1pt;font-family:arial;"><FONT SIZE=2></font>&#8203;<font></FONT></TD>
</TR>
<TR bgcolor="#FFFFFF"  VALIGN="BOTTOM">
<TD style="line-height:0.75pt;font-family:arial;"><FONT SIZE=2>


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<!-- COMMAND=ADD_GUTTERGRID,"line-height:0.75pt;" -->


 </font>&#8203;</TD>
<TD style="line-height:0.75pt;font-family:arial;"><FONT SIZE=2></font>&#8203;<font></FONT></TD>
<TD style="line-height:0.75pt;font-family:arial;"><FONT SIZE=2></font>&#8203;<font></FONT></TD>
<TD ALIGN="RIGHT" style="line-height:0.75pt;font-family:arial;"><FONT SIZE=2></font>&#8203;<font></FONT></TD>
<TD style="line-height:0.75pt;font-family:arial;"><FONT SIZE=2></font>&#8203;<font></FONT></TD>
</TR>
<TR style="font-size:1.5pt;" bgcolor="#FFFFFF"  VALIGN="BOTTOM">
<TD style="line-height:0pt;font-family:arial;">


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&nbsp;</TD>
<TD style="line-height:0pt;font-family:arial;">&nbsp;</TD>
<TD COLSPAN=2 ALIGN="RIGHT" style="line-height:0pt;font-family:arial;border-bottom:solid #000000 1.0pt;">&nbsp;</TD>
<TD style="line-height:0pt;font-family:arial;">&nbsp;</TD>
</TR>
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<P style="font-family:arial;"><FONT SIZE=2><B> Credit Facility  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>In order to fund acquisitions and to meet cash needs that may result from timing differences between our receipts of rents and our desire or need to
make distributions or pay operating or capital expenses, we maintain a $750.0&nbsp;million unsecured revolving credit facility with a group of institutional lenders.
The maturity date of our revolving credit facility is January&nbsp;15, 2018 and, subject to the payment of an extension fee and meeting certain other conditions, we have an option to extend the
stated maturity date of our revolving credit facility by one year to January&nbsp;15, 2019. In addition, the credit agreement governing our revolving credit facility includes a feature under which
the maximum borrowing availability under the facility may be increased to up to $1.5&nbsp;billion in certain circumstances. Borrowings under our revolving credit facility bear interest at LIBOR plus
a premium, which was 130 basis points as of July&nbsp;15, 2015. We also pay a facility fee of 30 basis points per annum on the total amount of lending commitments under our revolving credit
facility. Both the interest rate premium and the facility fee are subject to adjustment based upon changes to our credit ratings. We can borrow, repay and reborrow funds available under our revolving
credit facility until maturity, and no principal repayment is due until maturity. At July&nbsp;15, 2015, the weighted average interest payable on our revolving credit facility was 1.48% per year and
the amount outstanding was $585.0&nbsp;million. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> Term Loan  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>In 2014, we entered into a term loan agreement pursuant to which we obtained a $350.0&nbsp;million unsecured term loan. Our term loan matures on
January&nbsp;15, 2020, and is prepayable without penalty at any time. In addition, our term loan includes a feature under which maximum borrowings may be increased to up to $700.0&nbsp;million in
certain circumstances. Our term loan bears interest at a rate of LIBOR plus a premium of 140 basis points that is subject to adjustment based upon changes to our credit ratings. At July&nbsp;15,
2015, the weighted average interest payable on our term loan was 1.60% per year. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> 4.30% Senior Notes Due 2016  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>We have $250.0&nbsp;million of senior unsecured notes outstanding, which carry interest at a fixed rate of 4.30% per annum and are due in 2016.
Interest on the notes is payable semi-annually in arrears and no principal payments are due until maturity. The 4.30% senior notes are redeemable by us at our option at any time at 100% of their
principal amount, plus a make-whole amount and accrued and unpaid interest. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> 3.25% Senior Notes Due 2019  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>We have $400.0&nbsp;million of senior unsecured notes outstanding, which carry interest at a fixed rate of 3.25% per annum and are due in 2019.
Interest on the notes is payable semi-annually in arrears and no </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-15</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2><A
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<P style="font-family:arial;"><FONT SIZE=2>principal
payments are due until maturity. The 3.25% senior notes are redeemable by us at our option at any time at 100% of their principal amount, plus a make-whole amount and accrued and unpaid
interest. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> 6.75% Senior Notes Due 2020  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>We have $200.0&nbsp;million of senior unsecured notes outstanding, which carry interest at a fixed rate of 6.75% per annum and are due in 2020.
Interest on the notes is payable semi-annually in arrears and no principal payments are due until maturity. The 6.75% senior notes are redeemable by us at our option at any time at 100% of their
principal amount, plus a make-whole amount and accrued and unpaid interest. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> 6.75% Senior Notes Due 2021  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>We have $300.0&nbsp;million of senior unsecured notes outstanding, which carry interest at a fixed rate of 6.75% per annum and are due in 2021.
Interest on the notes is payable semi-annually in arrears and no principal payments are due until maturity. The 6.75% senior notes are redeemable by us at our option at any time at 100% of their
principal amount, plus a make-whole amount and accrued and unpaid interest. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> 4.75% Senior Notes Due 2024  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>We have $250.0&nbsp;million of senior unsecured notes outstanding, which carry interest at a fixed rate of 4.75% per annum and are due in 2024.
Interest on the notes is payable semi-annually in arrears and no principal payments are due until maturity. The 4.75% senior notes are redeemable by us at our option at any time at 100% of their
principal amount, plus a make-whole amount and accrued and unpaid interest. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> 5.625% Senior Notes due 2042  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>We have $350.0&nbsp;million of senior unsecured notes outstanding, which carry interest at a fixed rate of 5.625% per annum and are due in 2042.
Interest on the notes is payable quarterly in arrears and no principal payments are due until maturity. The 5.75% senior notes are redeemable by us at our option at any time at 100% of their principal
amount, plus accrued and unpaid interest. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> Secured Debt and Capital Leases  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>The secured debt and capital leases shown above include $609.0&nbsp;million of mortgage notes secured by 46 properties (48 buildings) which had a
book value of $935.1&nbsp;million before accumulated depreciation at March&nbsp;31, 2015. The obligors on this debt are certain of our subsidiaries. Subsequent to March&nbsp;31, 2015, we prepaid
or repaid $30.6&nbsp;million of unsecured mortgage debt encumbering 7 properties with a weighted average interest rate of 5.73%. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>Two
of our properties are leased by a subsidiary of ours under agreements which are accounted for as capital leases under GAAP. At March&nbsp;31, 2015, our outstanding obligations and carrying value
of related properties under these capital leases were as follows (dollars in thousands): </FONT></P>

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<TH NOWRAP  ALIGN="LEFT" style="font-family:arial;"><DIV style="border-bottom:solid #000000 1.0pt;margin-bottom:0pt;width:97pt;"><FONT  style="font-size:8pt;line-height:9pt;"><B>Balance at March&nbsp;31, 2015

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 </B></FONT></DIV></TH>
<TH style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TH>
<TH ALIGN="CENTER" style="font-family:arial;border-bottom:solid #000000 1.0pt;"><FONT  style="font-size:8pt;line-height:9pt;"><B>Existing<BR>
term ending </B></FONT></TH>
<TH style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:arial;border-bottom:solid #000000 1.0pt;"><FONT  style="font-size:8pt;line-height:9pt;"><B>Required<BR>
payments<BR>
in 2015 </B></FONT></TH>
<TH style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TH>
<TH ALIGN="CENTER" style="font-family:arial;border-bottom:solid #000000 1.0pt;"><FONT  style="font-size:8pt;line-height:9pt;"><B>Number of<BR>
leased<BR>
properties </B></FONT></TH>
<TH style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:arial;border-bottom:solid #000000 1.0pt;"><FONT  style="font-size:8pt;line-height:9pt;"><B>Book value before<BR>
accumulated<BR>
depreciation of<BR>
leased properties at<BR>
March&nbsp;31, 2015 </B></FONT></TH>
<TH style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TH>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD VALIGN="BOTTOM" style="font-family:arial;"><p style="font-family:arial;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>$10,300</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="CENTER" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>April&nbsp;30, 2026</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>1,205</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="CENTER" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>1 property</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>22,210</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD VALIGN="BOTTOM" style="font-family:arial;"><p style="font-family:arial;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>$2,321</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="CENTER" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>April&nbsp;30, 2026</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>301</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="CENTER" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>1 property</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>11,972</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
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<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-16</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2>
<A HREF="#bg15403a_main_toc">Table of Contents</A> </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2><A
NAME="ci15403_material_federal_income_tax_considerations"> </A>
<A NAME="toc_ci15403_1"> </A>
<BR></FONT><FONT SIZE=2><B>  <A NAME="MF"></A>Material federal income tax considerations    <BR>    </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>The following summary of United States federal income tax considerations is based upon the Internal Revenue Code of 1986, as amended, or the Tax Code,
Treasury regulations, and rulings and decisions now in effect, all of which are subject to change, possibly with retroactive effect, or possible differing interpretations. We have not sought a ruling
from the Internal Revenue Service, or the IRS, with respect to any matter described in this summary, and we cannot provide any assurance that the IRS or a court will agree with the statements made in
this summary. The summary applies to you only if you hold our notes as a capital asset, which is generally an asset held for investment rather than as inventory or as property used in a trade or
business. The summary does not discuss all of the particular tax considerations that might be relevant to you if you are subject to special rules under federal income tax law, for example if you
are:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>a bank, insurance company or other financial institution; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>a regulated investment company or REIT; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>a subchapter&nbsp;S corporation; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>a broker, dealer or trader in securities or foreign currency; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>a person who has a functional currency other than the United States dollar; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>a person who acquires our notes in connection with employment or other
performance of services; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>a person subject to alternative minimum tax; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>a person who owns our notes as part of a straddle, hedging transaction,
constructive sale transaction, constructive ownership transaction or conversion transaction; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>a United States expatriate; or </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>except as specifically described in the following summary, a trust, estate,
tax-exempt entity or foreign person. </FONT></DD></DL>
</UL>

<P style="font-family:arial;"><FONT SIZE=2>In
addition, the following summary does not address all possible tax considerations relating to the acquisition, ownership and disposition of our notes, and in particular does not discuss any estate,
gift, generation-skipping transfer, state, local or foreign tax considerations. For all these reasons, we encourage you and any prospective acquiror of our notes to consult with a tax advisor about
the federal income tax and other tax considerations of the acquisition, ownership and disposition of our notes. </FONT></P>


<P style="font-family:arial;"><FONT SIZE=2>Your
federal income tax consequences may differ depending on whether or not you are a "U.S. holder." For purposes of this summary, you are a U.S. holder if you are a beneficial owner of our notes and
for federal income tax purposes are:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>a citizen or resident of the United States, including an alien individual
who is a lawful permanent resident of the United States or meets the substantial presence residency test under the federal income tax laws; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>an entity treated as a corporation for federal income tax purposes that is
created or organized in or under the laws of the United States, any state thereof or the District of Columbia; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>an estate the income of which is subject to federal income taxation
regardless of its source; or </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>a trust if a court within the United States is able to exercise primary
supervision over the administration of the trust and one or more United States persons have the authority to control all substantial decisions of the trust, or, to the extent provided in Treasury
regulations, a trust in existence on August&nbsp;20, 1996 that has elected to be treated as a domestic trust; </FONT></DD></DL>
</UL>

<P style="font-family:arial;"><FONT SIZE=2>whose
status as a U.S. holder is not overridden by an applicable tax treaty. Conversely, you are a "non-U.S. holder" if you are a beneficial owner of our notes and are not a U.S. holder. If a
partnership (including any entity treated as a partnership for federal income tax purposes) holds our notes, the tax treatment of a partner in the partnership generally will depend upon the status of
the partner and the activities of the partnership. A holder of our notes that is a partnership and partners in such a partnership are urged to </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-17</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2><A
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<P style="font-family:arial;"><FONT SIZE=2>consult
their tax advisors about the federal income tax consequences of the acquisition, ownership and disposition of our notes. </FONT></P>


<P style="font-family:arial;"><FONT SIZE=2><B> Tax Considerations for U.S. Holders  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>If you are a U.S. holder: </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I> Payments of interest.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;You must generally include interest on a note in your gross income as ordinary interest
income:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>when you receive it, if you use the cash method of accounting for federal
income tax purposes, or </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>when it accrues, if you use the accrual method of accounting for federal
income tax purposes. </FONT></DD></DL>
</UL>

<P style="font-family:arial;"><FONT SIZE=2>Any
portion of the purchase price for a note that is allocable to prior accrued interest generally may be treated as offsetting a portion of the interest income from the next scheduled interest
payment on the note. Any interest income so offset is not taxable. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I> Market discount.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;If you acquire a note and your adjusted tax basis in it upon acquisition is less than its principal amount, you will be treated as having acquired
the note at a "market discount" unless the amount of this market discount is less than the </FONT><FONT SIZE=2><I>de minimis</I></FONT><FONT SIZE=2> amount (generally 0.25% of the principal amount of
the note multiplied by the number of remaining whole years to maturity of the note). Under the market discount rules, you will be required to treat any gain on the sale, exchange, redemption,
retirement, or other taxable disposition of a note, or any appreciation in a note in the case of certain nontaxable dispositions, such as a gift, as ordinary income to the
extent of the market discount which has not previously been included in your income and which is treated as having accrued on the note at the time of the disposition. In addition, you may be required
to defer, until the maturity of the note or earlier taxable disposition, the deduction of all or a portion of the interest expense on any indebtedness incurred or continued to purchase or carry the
note. Any market discount will be considered to accrue ratably during the period from the date of your acquisition to the maturity date of the note, unless you elect to accrue the market discount on a
constant yield method. In addition, you may elect to include market discount in income currently as it accrues, on either a ratable or constant yield method, in which case the rule described above
regarding deferral of interest deductions will not apply. This election to include market discount in income currently, once made, applies to all market discount obligations acquired by you during or
after the first taxable year to which the election applies and may not be revoked without the consent of the IRS. We encourage you to consult with your tax advisor regarding these elections. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I> Amortizable bond premium.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;If you acquire a note and your adjusted tax basis in it upon acquisition is greater than its principal amount, you will be treated as
having acquired the note with "bond premium." You generally may elect to amortize this bond premium over the remaining term of the note on a constant yield method, and the amount amortized in any year
will generally be treated as a reduction of your interest income from the note for that year. If the amount of your bond premium amortization would be lower if calculated based on an earlier optional
redemption date and the redemption price on that date than the amount of amortization calculated through that date based on the note's maturity date and its stated principal amount, then you must
calculate the amount and timing of your bond premium amortization deductions assuming that the note will be redeemed on the optional redemption date at the optional redemption price. You may generally
recalculate your bond premium amortization amount and schedule of deductions to the extent your note is not actually redeemed at that earlier optional redemption date. If you do not make an election
to amortize bond premium, your bond premium on a note will decrease the gain or increase the loss that you otherwise recognize on a disposition of that note. Any election to amortize bond premium
applies to all taxable debt obligations that you hold at the beginning of the first taxable year to which the election applies and that you thereafter acquire. You may not revoke an election to
amortize bond premium without the consent of the IRS. We encourage you to consult with your tax advisor regarding this election. </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-18</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2><I> Disposition of a note.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;Upon the sale, exchange, redemption, retirement or other disposition of a note, you generally will recognize taxable gain or loss in an
amount equal to the difference, if any, between (1)&nbsp;the amount you receive in cash or in property, valued at its fair market value, upon this sale, exchange, redemption, retirement or other
disposition, other than amounts representing accrued and unpaid interest which will be taxable as interest income, and (2)&nbsp;your adjusted tax basis in the note. Your adjusted tax basis in the
note will, in general, equal your acquisition cost for the note, exclusive of any amount paid allocable to prior accrued interest, as increased by any market discount you have included in income in
respect of the note, and as decreased by any amortized bond premium on the note. Except to the extent of any accrued market discount not previously included in income, as discussed above, your gain or
loss will be capital gain or loss, and will be long-term capital gain or loss if you
have held the note for more than one year at the time of disposition. For noncorporate U.S. holders, preferential rates of tax may apply to long-term capital gains. The deductibility of capital losses
is subject to limitation. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I> Medicare contribution tax.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;U.S. holders that are individuals, estates or trusts are generally required to pay a 3.8% Medicare tax on their net investment income
(including interest on our notes and gains from the sale or other disposition of our notes), or in the case of estates and trusts on their net investment income that is not distributed, in each case
to the extent that their total adjusted income exceeds applicable thresholds. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> Tax Considerations for Non-U.S. Holders  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>The rules governing the United States federal income taxation of non-U.S. holders are complex, and the following discussion is intended only as a
summary of these rules. If you are a non-U.S. holder, we urge you to consult with your own tax advisor to determine the impact of United States federal, state, local and foreign tax laws, including
any tax return filing and other reporting requirements, with respect to your investment in our notes. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>If
you are a non-U.S. holder: </FONT></P>


<P style="font-family:arial;"><FONT SIZE=2><I> Generally.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;You will not be subject to federal income taxes on payments of principal, premium, or Make-Whole Amount, if any, or interest on a note, or upon the sale,
exchange, redemption, retirement or other disposition of a note, if:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>you do not own directly or indirectly 10% or more of the total voting power
of all classes of our voting shares; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>your income and gain in respect of the note is not effectively connected
with the conduct of a United States trade or business; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>you are not a controlled foreign corporation that is related to or under
common control with us; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>we or the applicable paying agent, or the Withholding Agent, have timely
received from you a properly executed, applicable IRS Form&nbsp;W-8 or substantially similar form in the year in which a payment of interest, principal, premium, or Make-Whole Amount occurs, or in a
previous calendar year to the extent provided for in the instructions to the applicable IRS Form&nbsp;W-8; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>in the case of gain upon the sale, exchange, redemption, retirement or other
disposition of a note recognized by an individual non-U.S. holder, you were present in the United States for less than 183&nbsp;days during the taxable year in which the gain was recognized. </FONT></DD></DL>
</UL>

<P style="font-family:arial;"><FONT SIZE=2>The
IRS Form&nbsp;W-8 or a substantially similar form must be signed by you under penalties of perjury certifying that you are a non-U.S. holder and providing your name and address, and you must
inform the Withholding Agent of any change in the information on the statement within 30&nbsp;days of the change. If you hold a note through a securities clearing organization or other qualified
financial institution, the organization or institution may provide a signed statement to the Withholding Agent. However, in that case, the signed statement must generally be accompanied by a statement
containing the relevant information from the executed IRS Form&nbsp;W-8 or substantially similar form that you provided to the organization or institution. If </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-19</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2>you
are a partner in a partnership holding our notes, both you and the partnership must comply with applicable certification requirements. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>Except
in the case of income or gain in respect of a note that is effectively connected with the conduct of a United States trade or business, discussed below, interest received or gain recognized by
you which does not qualify for exemption from taxation will be subject to federal income tax at a rate of 30%, which will be withheld in the case of payments of interest, unless reduced or eliminated
by an applicable tax treaty. You must generally use an applicable IRS Form&nbsp;W-8, or a substantially similar form, to claim tax treaty benefits. If you are a non-U.S. holder claiming benefits
under an income tax treaty, you should be aware that you may be required to obtain a taxpayer identification number and to certify your eligibility under the applicable treaty's limitations on
benefits article in order to comply with the applicable certification requirements of the Treasury regulations. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I> Effectively connected income and gain.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;If you are a non-U.S. holder whose income and gain in respect of a note are effectively connected with the conduct of a
United States trade or business (and, if provided by an applicable income tax treaty, are attributable to a permanent establishment or fixed base you maintain in the United States), you will be
subject to regular federal income tax on this income and gain in generally the same manner as U.S. holders, and general federal income tax return filing requirements will apply. In addition, if you
are a corporation, you may be subject to a branch profits tax equal to 30% of your effectively connected adjusted earnings and profits for the taxable year, unless you qualify for a lower rate under
an applicable tax treaty. To obtain an exemption from withholding on interest on the notes that is effectively connected with the conduct of a United States trade or business, you must generally
supply to the Withholding Agent an applicable IRS Form&nbsp;W- 8, or a substantially similar form. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><B> Withholding and Information Reporting  </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>Information reporting, backup withholding and withholding under the Foreign Account Tax Compliance Act, or FATCA, may apply to interest and other
payments to you under the circumstances discussed below. Amounts withheld under backup withholding are generally not an additional tax and may be refunded by the IRS or credited against your federal
income tax liability, provided that you furnish required information to the IRS. The backup withholding rate is currently 28%. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>Under
FATCA, non-U.S. financial institutions and other non-U.S. entities are subject to diligence and reporting requirements for purposes of identifying accounts and investments held directly or
indirectly by U.S. persons. The failure to comply with these additional information reporting, certification and other requirements could result in a 30% withholding tax on applicable payments to
non-U.S. persons. In particular, a payee that is a foreign financial institution that is subject to the diligence and reporting requirements described above must enter into an agreement with the U.S.
Department of the Treasury requiring, among other things, that it undertake to identify accounts held by "specified United States persons" or "United States owned foreign entities" (each as defined in
the Tax Code), annually report information about such accounts, and withhold 30% on applicable payments to noncompliant foreign financial institutions and account holders. Foreign financial
institutions located in jurisdictions that have an intergovernmental agreement with the United States with respect to these requirements may be subject to different rules. The foregoing withholding
will generally apply currently to payments of interest on our notes, and to other "withholdable payments" (including payments of gross proceeds from a sale or other disposition of our notes) made
after December&nbsp;31, 2016. In general, to avoid withholding, any non-United States intermediary through which a holder owns our notes must establish its compliance with the foregoing regime, and
a non-U.S. holder must provide certain documentation (usually an applicable IRS Form&nbsp;W-8) containing information about its identity, its status, and if required, its direct and indirect U.S.
owners. We encourage you to consult with your tax advisor regarding foreign account tax compliance if you hold our notes through a non-U.S. intermediary or are a non-U.S. holder. </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-20</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2><A
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<P style="font-family:arial;"><FONT SIZE=2><I> If you are a U.S. Holder.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;You may be subject to backup withholding when you receive interest payments on a note or proceeds upon the sale, exchange, redemption,
retirement or other disposition of a note. In general, you can avoid this backup withholding if you properly execute under penalties of perjury an IRS Form&nbsp;W-9 or a substantially similar form
on which you:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>provide your correct taxpayer identification number; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>certify that you are exempt from backup withholding because (a)&nbsp;you
are a corporation or come within another enumerated exempt category, (b)&nbsp;you have not been notified by the IRS that you are subject to backup withholding, or (c)&nbsp;you have been notified
by the IRS that you are no longer subject to backup withholding; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:arial;margin-bottom:-11pt;'><FONT SIZE=3>&#149;</FONT></DT><DD style="font-family:arial;"><FONT SIZE=2>certify that you are a U.S. citizen or other U.S. person. </FONT></DD></DL>
</UL>

<P style="font-family:arial;"><FONT SIZE=2>If
you do not provide your correct taxpayer identification number on the IRS Form&nbsp;W-9 or a substantially similar form, you may be subject to penalties imposed by the IRS. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>Unless
you have established on a properly executed IRS Form&nbsp;W-9 or a substantially similar form that you come within an enumerated exempt category, interest and other payments on the notes paid
to you during the calendar year, and the amount of tax withheld, if any, will be reported to you and to the IRS. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I> If you are a non-U.S. Holder.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;The amount of interest paid to you on a note during each calendar year, and the amount of tax withheld, if any, will generally be
reported to you and to the IRS. This information reporting requirement applies regardless of whether you were subject to withholding or whether withholding was reduced or eliminated by an applicable
tax treaty. Also, interest paid to you on a note may be subject to backup withholding
unless you properly certify your non-U.S. holder status on an applicable IRS Form&nbsp;W-8 or a substantially similar form in the manner described above, under "Tax Considerations for Non-U.S.
Holders." Similarly, information reporting and backup withholding will not apply to proceeds you receive upon the sale, exchange, redemption, retirement or other disposition of a note, if you properly
certify that you are a non-U.S. holder on an applicable IRS Form&nbsp;W-8 or a substantially similar form. Even without having executed an IRS Form&nbsp;W-8 or a substantially similar form,
however, in some cases information reporting and backup withholding may not apply to proceeds you receive upon the sale, exchange, redemption, retirement or other disposition of a note, if you receive
those proceeds through a broker's foreign office. </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-21</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2><A
HREF="#bg15403a_main_toc">Table of Contents</A></FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2><A
NAME="ci15403_underwriting"> </A>
<A NAME="toc_ci15403_2"> </A>
<BR></FONT><FONT SIZE=2><B>  <A NAME="UW"></A>Underwriting    <BR>    </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>We are offering the notes through the underwriters listed in the table below. Citigroup Global Markets&nbsp;Inc., RBC Capital Markets,&nbsp;LLC,
UBS Securities&nbsp;LLC and Wells Fargo Securities,&nbsp;LLC are the representatives of the underwriters and are the joint book-running managers of the offering. Subject to the terms and
conditions of an underwriting agreement, we have agreed to sell to each of the underwriters named below, severally and not jointly, and each of the underwriters has severally and not jointly agreed to
purchase from us, the aggregate principal amount of notes set forth opposite its name below. </FONT></P>

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<TH NOWRAP  ALIGN="LEFT" style="font-family:arial;"><DIV style="border-bottom:solid #000000 1.0pt;margin-bottom:0pt;width:45pt;"><FONT  style="font-size:8pt;line-height:9pt;"><B>Underwriters

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<TH style="font-family:arial;"><FONT  style="font-size:8pt;line-height:9pt;">&nbsp;</FONT></TH>
<TH ALIGN="CENTER" style="font-family:arial;border-bottom:solid #000000 1.0pt;"><FONT  style="font-size:8pt;line-height:9pt;"><B>Aggregate Principal<BR>
Amount of Notes </B></FONT></TH>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD VALIGN="BOTTOM" style="font-family:arial;"><p style="font-family:arial;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Citigroup Global Markets&nbsp;Inc.&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="CENTER" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD VALIGN="BOTTOM" style="font-family:arial;"><p style="font-family:arial;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>RBC Capital Markets,&nbsp;LLC</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="CENTER" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD VALIGN="BOTTOM" style="font-family:arial;"><p style="font-family:arial;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>UBS Securities&nbsp;LLC</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="CENTER" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
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<TD VALIGN="BOTTOM" style="font-family:arial;"><p style="font-family:arial;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Wells Fargo Securities,&nbsp;LLC</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="CENTER" VALIGN="BOTTOM" style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
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<P style="font-family:arial;"><FONT SIZE=2>The
underwriting agreement provides that the obligations of the underwriters are subject to specified conditions precedent and that, when those conditions are satisfied, the underwriters will be
obligated to purchase all of the notes. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>The
representatives of the underwriters have advised us that the underwriters propose initially to offer the notes to the public at the respective public offering prices listed on the cover page of
this prospectus supplement and to
dealers at that price less a concession not in excess of&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;% of the principal amount per note. The underwriters may allow, and the dealers may reallow, a discount not in excess of
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;% of the principal amount per note. After the initial public offering, the public offering prices, concessions and discount may be changed. In connection with this offering, certain of
the underwriters and securities dealers may distribute prospectuses electronically. </FONT></P>


<P style="font-family:arial;"><FONT SIZE=2>The
following table shows the underwriting discounts that we are to pay to the underwriters in connection with this offering. </FONT></P>

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<TD style="font-family:arial;"><p style="font-family:arial;margin-left:9pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Per Note</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>%</FONT></TD>
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<TD style="font-family:arial;"><p style="font-family:arial;margin-left:18pt;text-indent:-9pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Total</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT"  style="font-family:arial;"><FONT SIZE=2>$</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:arial;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></TD>
<TD style="font-family:arial;"><FONT SIZE=2>&nbsp;</FONT></TD>
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<P style="font-family:arial;"><FONT SIZE=2>The
notes constitute a new issue of securities with no established trading market and will not be listed on any national securities exchange. We have been advised by the underwriters that they intend
to make a market in the notes, but they are not obligated to do so and may discontinue market making at any time without notice. We can give no assurance as to the liquidity of or any trading market
for the notes. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>We
estimate our expenses in connection with this offering (excluding the underwriting discount) will be approximately $500,000 and will be payable by us. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>In
connection with this offering, the underwriters may engage in transactions that stabilize, maintain or otherwise affect the price of the notes. Specifically, the underwriters may over-allot in
connection with the offering of the notes, creating a syndicate short position. In addition, the underwriters may bid for, and </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-22</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2><A
HREF="#bg15403a_main_toc">Table of Contents</A></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>purchase,
the notes in the open market to cover short positions or to stabilize the price of the notes. Finally, the underwriters may reclaim selling concessions allowed for distributing the notes in
the offering, if the underwriters repurchase previously distributed notes in transactions to cover short positions, in stabilization transactions or otherwise. Any of these activities may stabilize or
maintain the market price of the notes above independent market levels. The underwriters are not required to engage in any of these activities at any time. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>We
and the underwriters make no representation or prediction as to the direction or magnitude of any effect that the transactions described in the preceding paragraph may have on the price of any
notes. In addition, we and the underwriters make no representation that the underwriters will engage in those types of transactions or that those transactions, once commenced, will not be discontinued
without notice. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>Affiliates
of certain of the underwriters including Citigroup Global Markets&nbsp;Inc., RBC Capital Markets,&nbsp;LLC, UBS Securities&nbsp;LLC and Wells Fargo Securities,&nbsp;LLC, are lenders
to us under our revolving credit facility and will receive pro rata portions of the net proceeds from this offering used to repay amounts thereunder. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>We
have agreed to indemnify the several underwriters against, or contribute to payments that the underwriters may be required to make in respect of, certain liabilities, including liabilities under
the Securities Act. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>From
time to time, some of the underwriters and/or their affiliates have engaged in, and may in the future engage in, commercial and/or investment banking transactions with us and our affiliates. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>In
addition, in the ordinary course of their various business activities, the underwriters and their respective affiliates may make or hold a broad array of investments and actively trade debt and
equity securities (or related derivative securities) and financial instruments (including bank loans) for their own account and for the accounts of their customers, and such investment and securities
activities may involve securities and instruments of ours or our affiliates. Certain of the underwriters and their affiliates that have a lending relationship with us routinely hedge their credit
exposure to us consistent with their customary risk management policies. Typically, such underwriters and their affiliates would hedge such exposure by entering into transactions which consist of
either the purchase of credit default swaps or the creation of short positions in our securities, including potentially the notes offered hereby. Any such short positions could adversely affect future
trading prices of the notes offered hereby. The underwriters and their respective affiliates may also make investment recommendations or publish or express independent research views in respect of
such securities or financial instruments and may at any time hold, or recommend to clients that they acquire, long or short positions in such securities and instruments. </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-23</FONT></P>

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<A NAME="page_ci15403_1_24"> </A>

<P style="font-family:arial;"><FONT SIZE=2><A
HREF="#bg15403a_main_toc">Table of Contents</A></FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2><A
NAME="ci15403_legal_matters"> </A>
<A NAME="toc_ci15403_3"> </A>
<BR></FONT><FONT SIZE=2><B>  <A NAME="LM"></A>Legal matters    <BR>    </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>Sullivan&nbsp;&amp; Worcester&nbsp;LLP, Boston, Massachusetts, our lawyers, will issue an opinion about the legality of the notes. Covington&nbsp;&amp;
Burling&nbsp;LLP, New York, New York, is counsel to the underwriters in connection with this offering. Sullivan&nbsp;&amp; Worcester&nbsp;LLP and Covington&nbsp;&amp; Burling&nbsp;LLP will rely, as
to certain matters of Maryland law, upon an opinion of Venable&nbsp;LLP, Baltimore, Maryland. Sullivan&nbsp;&amp; Worcester&nbsp;LLP also has passed upon our qualification and taxation as a REIT in
an opinion filed with the registration statement of which the accompanying prospectus is a part. Sullivan&nbsp;&amp; Worcester&nbsp;LLP also represents RMR&nbsp;LLC, our manager, Five Star, SIR, and
certain of their affiliates on various matters. Venable&nbsp;LLP also represents Five Star and SIR on various matters. </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2><A
NAME="ci15403_experts"> </A>
<A NAME="toc_ci15403_4"> </A>
<BR></FONT><FONT SIZE=2><B>  <A NAME="EXP"></A>Experts    <BR>    </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>Ernst&nbsp;&amp; Young&nbsp;LLP, independent registered public accounting firm, has audited our consolidated financial statements and schedule
included in our Annual Report, and the effectiveness of our internal control over financial reporting as of December&nbsp;31, 2014, as set forth in their reports, which are incorporated by reference
in this prospectus supplement and elsewhere in the registration statement. Our financial statements and schedule are incorporated by reference in reliance on Ernst&nbsp;&amp; Young&nbsp;LLP's reports,
given on their authority as experts in accounting and auditing. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>The
combined statement of revenues and certain expenses of the CCIT&#151;Healthcare Properties for the year ended December&nbsp;31, 2014, incorporated in this prospectus supplement and the
accompanying prospectus by reference from the Current Report on Form&nbsp;8-K filed by us on June&nbsp;26, 2015, have been audited by McGladrey&nbsp;LLP, an independent auditor, as stated in
their report, which is incorporated in this prospectus supplement and the accompanying prospectus by reference. Such statement of revenues and certain expenses has been so incorporated in reliance
upon the report of such firm given upon their authority as experts in accounting and auditing. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>The
statement of revenues and certain expenses of the Senior Living Communities for the year ended December&nbsp;31, 2014, incorporated in this prospectus supplement and the accompanying prospectus
by reference from the Current Report on Form&nbsp;8-K filed by us on June&nbsp;26, 2015, have been audited by PricewaterhouseCoopers&nbsp;LLP, independent certified public accountants, as stated
in their report, which is incorporated in this prospectus supplement and the accompanying prospectus by reference. Such statement of revenues and certain expenses has been so incorporated in reliance
upon the report of such firm given upon their authority as experts in accounting and auditing. </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2><A
NAME="ci15403_where_you_can_find_more_information"> </A>
<A NAME="toc_ci15403_5"> </A>
<BR></FONT><FONT SIZE=2><B>  <A NAME="WHE"></A>Where you can find more information    <BR>    </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>You may read and copy any material that we file with the SEC at the SEC's Public Reference Room at 100&nbsp;F Street, N.E., Washington, D.C. 20549.
You may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. You may also access our SEC filings over the internet at the SEC's website at
http://www.sec.gov. </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2><I>

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<P style="font-family:arial;"><FONT SIZE=2>THE
AMENDED AND RESTATED DECLARATION OF TRUST ESTABLISHING SENIOR HOUSING PROPERTIES TRUST, DATED SEPTEMBER 20, 1999, AS AMENDED AND SUPPLEMENTED, AS FILED WITH THE STATE DEPARTMENT OF ASSESSMENTS AND
TAXATION OF MARYLAND, PROVIDES THAT NO TRUSTEE, OFFICER, SHAREHOLDER, EMPLOYEE OR AGENT OF SENIOR HOUSING PROPERTIES TRUST SHALL BE HELD TO ANY PERSONAL LIABILITY, JOINTLY OR SEVERALLY, FOR ANY
OBLIGATION OF, OR CLAIM AGAINST, SENIOR HOUSING PROPERTIES TRUST. ALL PERSONS DEALING WITH SENIOR HOUSING PROPERTIES TRUST IN ANY WAY SHALL LOOK ONLY TO THE ASSETS OF SENIOR HOUSING PROPERTIES TRUST
FOR THE PAYMENT OF ANY SUM OR THE PERFORMANCE OF ANY OBLIGATION. </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-24</FONT></P>

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<A HREF="#bg15403a_main_toc">Table of Contents</A> </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2><A
NAME="ck15403_glossary"> </A>
<A NAME="toc_ck15403_1"> </A>
<BR></FONT><FONT SIZE=2><B>  <A NAME="GLO"></A>Glossary    <BR>    </B></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Acquired Debt"</I></FONT><FONT SIZE=2> means Debt of a Person (1)&nbsp;existing at the time such Person becomes a Subsidiary
or (2)&nbsp;assumed in connection with the acquisition of assets from such Person, in each case, other than Debt incurred in connection with, or in contemplation of, such Person becoming a
Subsidiary or such acquisition. Acquired Debt is deemed to be incurred on the date of the related acquisition of assets from any Person or the date the acquired Person becomes a Subsidiary. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Adjusted Total Assets"</I></FONT><FONT SIZE=2> is defined above under "Description of Notes&#151;Certain Covenants&#151;Limitations on Incurrence of Debt." </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Affiliate"</I></FONT><FONT SIZE=2> of any specified Person means any other Person directly or indirectly controlling or controlled by or under direct or indirect common control
with such specified Person. For the purposes of this definition, "control" when used with respect to any specified Person means the power to direct the management and policies of such Person, directly
or indirectly, whether through the ownership of voting securities, by contract or otherwise; and the terms "controlling" and "controlled" have meanings correlative to the foregoing. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Annual Debt Service"</I></FONT><FONT SIZE=2> as of any date means the maximum amount which is expensed in any 12-month period for interest on Debt of Senior Housing and its
Subsidiaries excluding amortization of debt discount and deferred financing costs. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Business Day"</I></FONT><FONT SIZE=2> means any day other than a Saturday or Sunday or a day on which banking institutions in The City of New York or in the city in which the
corporate trust office of the Trustee is located is required or authorized to close. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Capital Stock"</I></FONT><FONT SIZE=2> means, with respect to any Person, any capital stock (including preferred stock), shares, interests, participation or other ownership
interests (however designated) of such Person and any rights (other than debt securities convertible into or exchangeable for capital stock), warrants or options to purchase any thereof. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Cash Equivalents"</I></FONT><FONT SIZE=2> means demand deposits, certificates of deposit or repurchase agreements with banks or other financial institutions, marketable
obligations issued or directly and fully guaranteed as to timely payment by the United States of America or any of its agencies or instrumentalities, or any commercial paper or other obligation rated,
at time of purchase, "P-2" (or its equivalent) or better by Moody's or "A-2" (or its equivalent) or better by Standard&nbsp;&amp; Poor's. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Consolidated Income Available for Debt Service"</I></FONT><FONT SIZE=2> for any period means Earnings from Operations of Senior Housing and its Subsidiaries plus amounts which
have been deducted, and minus amounts which have been added, for the following (without duplication): (1)&nbsp;interest or distributions on Debt of Senior Housing and its Subsidiaries,
(2)&nbsp;provision for taxes of Senior Housing and its Subsidiaries based on income, (3)&nbsp;amortization of debt discount and deferred financing costs, (4)&nbsp;provisions for gains and losses
on properties and property depreciation and amortization, (5)&nbsp;the effect of any noncash charge resulting from a change in accounting principles in determining Earnings from Operations for such
period and (6)&nbsp;amortization of deferred charges. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Debt"</I></FONT><FONT SIZE=2> of Senior Housing or any Subsidiary means, without duplication, any indebtedness of Senior Housing or any Subsidiary, whether or not contingent, in
respect of: </FONT></P>

<UL>

<P style="font-family:arial;"><FONT SIZE=2>(1)&nbsp;&nbsp;borrowed
money or evidenced by bonds, notes, debentures or similar instruments; </FONT></P>


<P style="font-family:arial;"><FONT SIZE=2>(2)&nbsp;&nbsp;indebtedness
for borrowed money secured by any Encumbrance existing on property owned by Senior Housing or any Subsidiary, to the extent of the lesser of (x)&nbsp;the amount of
indebtedness so secured or (y)&nbsp;the fair market value of the property subject to such Encumbrance; </FONT></P>

</UL>
<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-25</FONT></P>

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<UL>

<P style="font-family:arial;"><FONT SIZE=2>(3)&nbsp;&nbsp;the
reimbursement obligations, contingent or otherwise, in connection with any letters of credit actually issued (other than letters of credit issued to provide credit enhancement or
support with respect to other indebtedness of Senior Housing or any Subsidiary otherwise reflected as Debt hereunder) or amounts representing the balance deferred and unpaid of the purchase price of
any property or services, except any such balance that constitutes an accrued expense or trade payable, or all conditional sale obligations or obligations under any title retention agreement; </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>(4)&nbsp;&nbsp;the
principal amount of all obligations of Senior Housing or any Subsidiary with respect to redemption, repayment or other repurchase of any Disqualified Stock; or </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2>(5)&nbsp;&nbsp;any
lease of property by Senior Housing or any Subsidiary as lessee which is reflected on Senior Housing's consolidated balance sheet as a capitalized lease in accordance with GAAP; </FONT></P>

</UL>

<P style="font-family:arial;"><FONT SIZE=2>to
the extent, in the case of items of indebtedness under (1)&nbsp;through (5)&nbsp;above, that any such items (other than letters of credit) would be properly classified as a liability on Senior
Housing's consolidated balance sheet in accordance with GAAP. Debt also (1)&nbsp;excludes any indebtedness (A)&nbsp;with respect to which a defeasance or covenant defeasance or discharge has been
effected (or an irrevocable deposit is made with a trustee in an amount at least equal to the outstanding principal amount of such indebtedness, the remaining scheduled payments of interest thereon
to, but not including, the applicable maturity date or redemption date, and any premium or otherwise as provided in the terms of such indebtedness) in accordance with the terms thereof or which has
been repurchased, retired, repaid, redeemed, irrevocably called for redemption (and an irrevocable deposit is made with a trustee in an amount at least equal to the outstanding principal amount of
such indebtedness, the remaining scheduled payments of interest thereon to, but not including, such redemption date, and any premium) or otherwise satisfied or (B)&nbsp;that is secured by cash or
Cash Equivalents irrevocably deposited with a trustee in an amount, in the case of this clause&nbsp;(B), at least equal to the outstanding principal amount of such indebtedness and the remaining
scheduled payments of interest thereon and (2)&nbsp;includes, to the extent not otherwise included, any obligation by Senior Housing or any Subsidiary to be liable for, or to pay, as obligor,
guarantor or otherwise (other than for purposes of collection in the ordinary course of business), Debt of another Person (other than Senior Housing or any Subsidiary); it being understood that Debt
shall be deemed to be incurred by Senior Housing or any Subsidiary whenever Senior Housing or such Subsidiary shall create, assume, guarantee or otherwise become liable in respect thereof. </FONT></P>


<P style="font-family:arial;"><FONT SIZE=2><I>"Disqualified Stock"</I></FONT><FONT SIZE=2> means, with respect to any Person, any Capital Stock of such Person which by the terms of such Capital Stock (or by the terms of any
security into which it is convertible or for which it is exchangeable or exercisable), upon the happening of any event or otherwise (1)&nbsp;matures or is mandatorily redeemable, pursuant to a
sinking fund obligation or otherwise (other than Capital Stock which is redeemable solely in exchange for Capital Stock which is not Disqualified Stock or for Subordinated Debt), (2)&nbsp;is
convertible into or exchangeable or exercisable for Debt, other than Subordinated Debt or Disqualified Stock or (3)&nbsp;is redeemable at the option of the
holder thereof, in whole or in part (other than Capital Stock which is redeemable solely in exchange for Capital Stock which is not Disqualified Stock or for Subordinated Debt); in each case on or
prior to the stated maturity of the notes. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Earnings from Operations"</I></FONT><FONT SIZE=2> for any period means net earnings excluding gains and losses on sales of investments, gains or losses on early extinguishment
of debt, extraordinary items and property valuation losses, in each case as reflected in the financial statements of Senior Housing and its Subsidiaries for such period, determined on a consolidated
basis in accordance with GAAP. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Encumbrance"</I></FONT><FONT SIZE=2> means any mortgage, lien, charge, pledge, security interest or other encumbrance of any kind. </FONT></P>


<P style="font-family:arial;"><FONT SIZE=2><I>"GAAP"</I></FONT><FONT SIZE=2> means generally accepted accounting principles set forth in the opinions and pronouncements of the Accounting Principles Board of the American
Institute of Certified Public Accountants and statements </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-26</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2>and
pronouncements of the Financial Accounting Standards Board, or in such other statements by such other entity as have been approved by a significant segment of the accounting profession, which were
in effect on December&nbsp;20, 2001, which is the date on which securities were originally issued by the Company under the Indenture, dated as of December&nbsp;20, 2001, between the Company and
State Street Bank and Trust Company, as trustee. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Joint Venture Interests"</I></FONT><FONT SIZE=2> means assets of Senior Housing and its Subsidiaries constituting an equity investment in real estate assets or other properties,
or in an entity holding real estate assets or other properties, jointly owned by Senior Housing and its Subsidiaries, on the one hand, and one or more other Persons not constituting Affiliates of
Senior Housing, on the other, excluding any entity or properties (1)&nbsp;which is a Subsidiary or are properties if the co-ownership thereof (if in a separate entity) would constitute or would have
constituted a Subsidiary or (2)&nbsp;to which, at the time of determination, Senior Housing's manager at such time or an Affiliate of Senior Housing's manager at such time provides management
services. In no event shall Joint Venture Interests include equity securities that are part of a class of equity securities that are traded on a national or regional securities exchange or a
recognized over-the-counter market or any investments in debt securities, mortgages or other Debt. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Make-Whole Amount"</I></FONT><FONT SIZE=2> means, in connection with any optional redemption of any notes prior to February&nbsp;1, 2025 the excess, if any, of (i)&nbsp;the
aggregate present value as of the date of such redemption of each dollar of principal being redeemed and the amount of interest (exclusive of interest accrued to the date of redemption) that would
have been payable in respect of such dollar if such redemption had been made on February&nbsp;1, 2025, determined by discounting, on a semiannual basis, such principal and interest at the applicable
Reinvestment Rate (determined on the third Business Day preceding the date such notice of redemption is given or declaration of
acceleration is made) from the respective dates on which such principal and interest would have been payable if such redemption had been made on February&nbsp;1, 2025, over (ii)&nbsp;the aggregate
principal amount of the notes being redeemed. In the case of any redemption of notes on or after February&nbsp;1, 2025, the Make-Whole Amount means zero. </FONT></P>


<P style="font-family:arial;"><FONT SIZE=2><I>"Moody's"</I></FONT><FONT SIZE=2> means Moody's Investors Service,&nbsp;Inc. or any successor. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Person"</I></FONT><FONT SIZE=2> means any individual, corporation, partnership, limited liability company, joint venture, association, joint stock company, trust, unincorporated
organization or government or any agency or political subdivision thereof. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Reinvestment Rate"</I></FONT><FONT SIZE=2> means a rate per annum equal to the sum of&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;%
(&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;percent), plus the yield on treasury securities
at constant maturity under the heading "Week Ending" published in the Statistical Release under the caption "Treasury Constant Maturities" for the maturity (rounded to the nearest month) corresponding
to the remaining life to maturity (which, in the case of maturities corresponding to the principal and interest due on the notes at their maturity, shall be deemed to be February&nbsp;1, 2025), as
of the payment date of the principal being redeemed or paid. If no maturity exactly corresponds to such maturity, yields for the two published maturities most closely corresponding to such maturity
shall be calculated pursuant to the immediately preceding sentence and the Reinvestment Rate shall be interpolated or extrapolated from such yields on a straight-line basis, rounding in each of such
relevant periods to the nearest month. For purposes of calculating the Reinvestment Rate, the most recent Statistical Release published prior to the date of determination of the Make-Whole Amount
shall be used. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Secured Debt"</I></FONT><FONT SIZE=2> means Debt secured by an Encumbrance on the property of Senior Housing or its Subsidiaries. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Standard&nbsp;&amp; Poor's"</I></FONT><FONT SIZE=2> means Standard&nbsp;&amp; Poor's Ratings Services, a Standard&nbsp;&amp; Poor's Financial Services&nbsp;LLC business, or any
successor. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Statistical Release"</I></FONT><FONT SIZE=2> means the statistical release designated "H.15(519)" or any successor publication which is published weekly by the Federal Reserve
System and which establishes yields on actively traded </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-27</FONT></P>

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<P style="font-family:arial;"><FONT SIZE=2>United
States government securities adjusted to constant maturities or, if such statistical release is not published at the time of any determination under the Indenture, then any publicly available
source of similar market data which shall be designated by Senior Housing. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Subordinated Debt</I></FONT><FONT SIZE=2>" means Debt which by the terms of such Debt is subordinated in right of payment to the principal of and interest and premium, if any,
on the notes. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Subsidiary"</I></FONT><FONT SIZE=2> means any corporation or other Person of which a majority of (1)&nbsp;the voting power of the voting equity securities or (2)&nbsp;the
outstanding equity interests of which are owned, directly or indirectly, by Senior Housing or one or more other Subsidiaries of Senior Housing. For the purposes of this definition, "voting equity
securities" means equity securities having voting power for the election of directors or persons serving comparable functions as directors, whether at all times or only so long as no senior class of
security has such voting power by reason of any contingency. </FONT></P>


<P style="font-family:arial;"><FONT SIZE=2><I>"Total Assets"</I></FONT><FONT SIZE=2> as of any date means the sum of (1)&nbsp;the Undepreciated Real Estate Assets and (2)&nbsp;all other assets of Senior Housing and its
Subsidiaries determined in accordance with GAAP (but excluding accounts receivable and intangibles). </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Total Unencumbered Assets"</I></FONT><FONT SIZE=2> as of any date means the sum of (1)&nbsp;the amount of Undepreciated Real Estate Assets of Senior Housing and its
Subsidiaries not securing any portion of Secured Debt and (2)&nbsp;the amount of all other assets, including accounts receivable and intangibles, of Senior Housing and its Subsidiaries not securing
any portion of Secured Debt, in each case on such date determined on a consolidated basis in accordance with GAAP; provided that, in determining Total Unencumbered Assets as a percentage of the
aggregate outstanding principal amount of Unsecured Debt of Senior Housing and its Subsidiaries on a consolidated basis for purposes of the covenant set forth above under "&#151;Maintenance of
Total Unencumbered Assets," Joint Venture Interests shall be excluded from Total Unencumbered Assets to the extent such Joint Venture Interests would otherwise be included therein. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Undepreciated Real Estate Assets"</I></FONT><FONT SIZE=2> as of any date means the cost (original cost plus capital improvements less adjustments to carrying value in accordance
with GAAP made prior to January&nbsp;1, 2001) of real estate and associated tangible personal property used in connection with the real estate assets of Senior Housing and its Subsidiaries on such
date, before depreciation and amortization determined on a consolidated basis in accordance with GAAP. </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><I>"Unsecured Debt"</I></FONT><FONT SIZE=2> means any Debt of Senior Housing or its Subsidiaries which is not Secured Debt. </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>S-28</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2><B>PROSPECTUS  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=4><B>SENIOR HOUSING PROPERTIES TRUST  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B>Debt Securities, Common Shares of Beneficial Interest,<BR>
Preferred Shares of Beneficial Interest, Depositary Shares and Warrants  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><I>

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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We or our selling security holders may offer, issue and sell, from time to time, in one or more offerings:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> debt securities; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> common shares of beneficial interest; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> preferred shares of beneficial interest; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> depositary shares; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> warrants. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
securities described in this prospectus may be offered and sold separately or in any combination, and may include convertible or exchangeable securities. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This
prospectus describes some of the general terms that may apply to these securities. The specific amounts and terms of any securities to be offered, issued or sold, and the identity
of any selling security holders, will be described in the applicable prospectus supplement. The applicable prospectus supplement may also add to, update or change information contained in this
prospectus. You should carefully read this prospectus and any accompanying prospectus supplement as well as the documents incorporated by reference in such documents before you decide to invest in any
of these securities. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
or our selling security holders may offer and sell these securities to or through one or more underwriters, dealers and agents, or directly to purchasers, on a continuous or delayed
basis. The
prospectus supplement for each offering will describe the terms of the plan of distribution and set forth the names of any underwriters, dealers or agents involved in the sale of the securities.
Unless otherwise set forth in the applicable prospectus supplement, we will not receive any proceeds from the sale of securities sold by any selling security holder. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
common shares of beneficial interest are listed on the New York Stock Exchange, or the NYSE, under the symbol "SNH." If any other securities offered by this prospectus will be listed
on a securities exchange, such listing will be described in the applicable prospectus supplement. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT
SIZE=3><B>Investment in our securities involves risk, including those described under "Risk Factors" beginning on page&nbsp;1 of this prospectus. You
should carefully read and consider these risk factors and the risk factors included in the reports that we file under the Securities Exchange Act of 1934, as amended, in any prospectus supplement
relating to specific offerings of securities and in other documents that we file with the Securities and Exchange Commission.</B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT SIZE=2><B>Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these
securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.</B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><B>The date of this prospectus is June&nbsp;26, 2015.</B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><I>

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<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#bi15401_about_this_prospectus"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>ABOUT THIS PROSPECTUS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#bi15401_about_this_prospectus"><FONT SIZE=2>i</FONT></A></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#da15401_prospectus_summary"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>PROSPECTUS SUMMARY</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#da15401_prospectus_summary"><FONT SIZE=2>1</FONT></A></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#da15401_risk_factors"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>RISK FACTORS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#da15401_risk_factors"><FONT SIZE=2>1</FONT></A></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#da15401_warning_concerning_forward_looking_statements"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>WARNING CONCERNING FORWARD LOOKING STATEMENTS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#da15401_warning_concerning_forward_looking_statements"><FONT SIZE=2>1</FONT></A></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#da15401_statement_concerning_limited_liability"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>STATEMENT CONCERNING LIMITED LIABILITY</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#da15401_statement_concerning_limited_liability"><FONT SIZE=2>5</FONT></A></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#dc15401_ratio_of_earnings_to_fixed_charges"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>RATIO OF EARNINGS TO FIXED CHARGES</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#dc15401_ratio_of_earnings_to_fixed_charges"><FONT SIZE=2>6</FONT></A></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#dc15401_use_of_proceeds"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>USE OF PROCEEDS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#dc15401_use_of_proceeds"><FONT SIZE=2>6</FONT></A></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#dc15401_description_of_debt_securities"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>DESCRIPTION OF DEBT SECURITIES</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#dc15401_description_of_debt_securities"><FONT SIZE=2>6</FONT></A></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#de15401_description_of_shares_of_beneficial_interest"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>DESCRIPTION OF SHARES OF BENEFICIAL INTEREST</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#de15401_description_of_shares_of_beneficial_interest"><FONT SIZE=2>17</FONT></A></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#dg15401_description_of_depositary_shares"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>DESCRIPTION OF DEPOSITARY SHARES</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#dg15401_description_of_depositary_shares"><FONT SIZE=2>23</FONT></A></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#di15401_description_of_warrants"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>DESCRIPTION OF WARRANTS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#di15401_description_of_warrants"><FONT SIZE=2>27</FONT></A></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#di15401_description_of_certain_provisi__des03778"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>DESCRIPTION OF CERTAIN PROVISIONS OF MARYLAND LAW AND OF OUR DECLARATION OF
TRUST AND BYLAWS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#di15401_description_of_certain_provisi__des03778"><FONT SIZE=2>28</FONT></A></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#dm15401_selling_security_holders"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>SELLING SECURITY HOLDERS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#dm15401_selling_security_holders"><FONT SIZE=2>39</FONT></A></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#dm15401_plan_of_distribution"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>PLAN OF DISTRIBUTION</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#dm15401_plan_of_distribution"><FONT SIZE=2>39</FONT></A></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#dm15401_legal_matters"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>LEGAL MATTERS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#dm15401_legal_matters"><FONT SIZE=2>41</FONT></A></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#dm15401_experts"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>EXPERTS</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#dm15401_experts"><FONT SIZE=2>41</FONT></A></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#dm15401_where_you_can_find_more_information"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>WHERE YOU CAN FIND MORE INFORMATION</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#dm15401_where_you_can_find_more_information"><FONT SIZE=2>41</FONT></A></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD VALIGN="TOP" style="font-family:times;"><A HREF="#dm15401_information_incorporated_by_reference"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>INFORMATION INCORPORATED BY REFERENCE</FONT></A></TD>
<TD VALIGN="TOP" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" style="font-family:times;"><A HREF="#dm15401_information_incorporated_by_reference"><FONT SIZE=2>42</FONT></A></TD>
<TD style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
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<P style="font-family:times;"><FONT SIZE=2><A HREF="#bg15401a_main_toc">Table of Contents</A> </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="bi15401_about_this_prospectus"> </A>
<A NAME="toc_bi15401_1"> </A>
<BR></FONT><FONT SIZE=2><B>  ABOUT THIS PROSPECTUS    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;References in this prospectus to "we," "us," "our" or "SNH" mean Senior Housing Properties Trust and its consolidated subsidiaries,
unless the context otherwise requires. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This
prospectus is part of an "automatic shelf" registration statement that we filed with the Securities and Exchange Commission, or the SEC, as a "well-known seasoned issuer" as defined
in Rule&nbsp;405 under the Securities Act of 1933, as amended, or the Securities Act. Under this shelf registration process, we or our selling security holders may, from time to time, offer, issue
and sell any of the securities or any combination of the securities described in this prospectus in such amounts and on such terms as set forth in a prospectus supplement in one or more offerings. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This
prospectus provides you with a general description of the securities that may be offered, which is not meant to be a complete description of each security. Each time we offer, issue
or sell securities hereunder, or any selling security holder offers or sells securities hereunder, we or such selling security holder, as applicable, will provide a prospectus supplement that contains
specific information about the amounts and terms of that offering. The prospectus supplement may also add to, update or change
information contained in this prospectus. You should read both this prospectus and any prospectus supplement together with additional information described under the headings "Where You Can Find More
Information" and "Information Incorporated By Reference." If there is any inconsistency between the information in this prospectus and any applicable prospectus supplement, you should rely on the
information in the applicable prospectus supplement. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;You
should rely only on the information provided or incorporated by reference in this prospectus or any relevant prospectus supplement. We have not authorized anyone to provide you with
different information. If anyone provides you with different or inconsistent information, you should not rely on it. Neither we nor any selling security holder will make an offer of the securities in
any jurisdiction where it is unlawful. You should assume that the information in this prospectus and any relevant prospectus supplement, as well as the information in any document incorporated or
deemed to be incorporated into this prospectus and any relevant prospectus supplement is accurate only as of the date of the documents containing the information. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>i</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2><A HREF="#bg15401a_main_toc">Table of Contents</A> </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="da15401_prospectus_summary"> </A>
<A NAME="toc_da15401_1"> </A>
<BR></FONT><FONT SIZE=2><B>  PROSPECTUS SUMMARY    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We are a real estate investment trust, or REIT, organized under Maryland law, which invests in senior living communities, including
independent living communities, assisted living communities and nursing homes, wellness centers and properties leased to medical providers, medical related businesses, clinics and biotech laboratory
tenants. As of March&nbsp;31, 2015, we owned 392 properties (419 buildings) located in 39 states and Washington, D.C., including four properties (seven buildings) classified as held for sale. On
that date, the undepreciated carrying value of our properties, net of impairment losses, was $6.7&nbsp;billion, excluding four properties (seven buildings) classified as held for sale. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
principal executive offices are located at Two Newton Place, 255 Washington Street, Suite&nbsp;300, Newton, Massachusetts 02458-1634, and our telephone number is
(617)&nbsp;796-8350. Our website is www.snhreit.com. The content of our website, and any information that is linked to our website (other than our filings with the SEC that are expressly
incorporated by reference, as set forth under "Information Incorporated by Reference"), is not incorporated by reference in this prospectus, and you should not consider it a part of this prospectus. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="da15401_risk_factors"> </A>
<A NAME="toc_da15401_2"> </A>
<BR></FONT><FONT SIZE=2><B>  RISK FACTORS    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Investing in our securities involves risks. You should carefully review the risk factors contained under the heading "Risk Factors" in
our Annual Report on Form&nbsp;10-K for the fiscal year ended December&nbsp;31, 2014, or our Annual Report, and any risk factors that we may describe in our Quarterly Reports on Form&nbsp;10-Q
or Current Reports on Form&nbsp;8-K filed subsequently to our Annual Report, which risk factors are incorporated by reference in this prospectus, the information contained under the heading "Warning
Concerning Forward Looking Statements" in this prospectus or under any similar heading in any applicable prospectus supplement or in any document incorporated herein or therein by reference, any
specific risk factors discussed under the caption "Risk Factors" in any applicable prospectus supplement or in any document incorporated herein or therein by reference and the other information
contained in, or incorporated by reference in, this prospectus or any applicable prospectus supplement before making an investment decision. If any such risks occur, our business, financial condition
or results of operations could be materially harmed, the market price of our securities could decline and you could lose all or part of your investment. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="da15401_warning_concerning_forward_looking_statements"> </A>
<A NAME="toc_da15401_3"> </A>
<BR></FONT><FONT SIZE=2><B>  WARNING CONCERNING FORWARD LOOKING STATEMENTS    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT SIZE=2><B>THIS PROSPECTUS, INCLUDING THE DOCUMENTS THAT ARE INCORPORATED BY REFERENCE, CONTAINS STATEMENTS THAT
CONSTITUTE FORWARD LOOKING STATEMENTS WITHIN THE MEANING OF THE PRIVATE SECURITIES LITIGATION REFORM ACT OF&nbsp;1995 AND OTHER SECURITIES LAWS. ALSO, WHENEVER WE USE WORDS SUCH AS "BELIEVE,"
"EXPECT," "ANTICIPATE," "INTEND," "PLAN," "ESTIMATE" OR SIMILAR EXPRESSIONS, WE ARE MAKING FORWARD LOOKING STATEMENTS. THESE FORWARD LOOKING STATEMENTS ARE BASED UPON OUR PRESENT INTENT, BELIEFS OR
EXPECTATIONS, BUT FORWARD LOOKING STATEMENTS ARE NOT GUARANTEED TO OCCUR AND MAY NOT OCCUR. FORWARD LOOKING STATEMENTS RELATE TO VARIOUS ASPECTS OF OUR BUSINESS,
INCLUDING:</B></FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>OUR ACQUISITIONS AND SALES OF PROPERTIES,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>OUR ABILITY TO COMPETE FOR ACQUISITIONS AND TENANCIES
EFFECTIVELY,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>OUR ABILITY TO RAISE EQUITY OR DEBT
CAPITAL,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>OUR ABILITY TO PAY DISTRIBUTIONS TO OUR SHAREHOLDERS AND THE AMOUNT OF SUCH
DISTRIBUTIONS,</B></FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>1</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2><A HREF="#bg15401a_main_toc">Table of Contents</A></FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>OUR ABILITY TO RETAIN OUR EXISTING TENANTS, ATTRACT NEW TENANTS AND MAINTAIN OR INCREASE CURRENT RENTAL
RATES,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>THE CREDIT QUALITIES OF OUR TENANTS,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>OUR POLICIES AND PLANS REGARDING INVESTMENTS AND
FINANCINGS,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>THE FUTURE AVAILABILITY OF BORROWINGS UNDER OUR REVOLVING CREDIT
FACILITY,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>OUR ABILITY TO PAY INTEREST ON AND PRINCIPAL OF OUR
DEBT,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>OUR TAX STATUS AS A REIT,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>OUR BELIEF THAT FIVE STAR QUALITY CARE,&nbsp;INC., OR FIVE STAR, OUR FORMER SUBSIDIARY, WHICH IS OUR LARGEST
TENANT AND WHICH MANAGES CERTAIN OF OUR SENIOR LIVING COMMUNITIES FOR OUR ACCOUNT, HAS ADEQUATE FINANCIAL RESOURCES AND LIQUIDITY TO MEET ITS OBLIGATIONS TO US AND TO MANAGE OUR SENIOR LIVING
COMMUNITIES SUCCESSFULLY, AND</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>OTHER MATTERS.</B></FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT
SIZE=2><B>OUR ACTUAL RESULTS MAY DIFFER MATERIALLY FROM THOSE CONTAINED IN OR IMPLIED BY OUR FORWARD LOOKING STATEMENTS AS A RESULT OF VARIOUS FACTORS. FACTORS THAT COULD
HAVE A MATERIAL ADVERSE EFFECT ON OUR FORWARD LOOKING STATEMENTS AND UPON OUR BUSINESS, RESULTS OF OPERATIONS, FINANCIAL CONDITION, FUNDS FROM OPERATIONS, NORMALIZED FUNDS FROM OPERATIONS, NET
OPERATING INCOME, CASH BASIS NET OPERATING INCOME, CASH FLOWS, LIQUIDITY AND PROSPECTS INCLUDE, BUT ARE NOT LIMITED TO:</B></FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>THE IMPACT OF CHANGES IN THE ECONOMY AND THE CAPITAL MARKETS ON US AND OUR TENANTS AND
MANAGERS,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>THE IMPACT OF THE PATIENT PROTECTION AND AFFORDABLE CARE ACT, AS AMENDED BY THE HEALTH CARE AND EDUCATION
RECONCILIATION ACT, OR COLLECTIVELY, THE ACA, AND OTHER EXISTING OR PROPOSED LEGISLATION OR REGULATIONS ON US, ON OUR TENANTS AND MANAGERS AND ON THEIR ABILITY TO PAY OUR RENTS AND
RETURNS,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>ACTUAL AND POTENTIAL CONFLICTS OF INTEREST WITH OUR MANAGING TRUSTEES, FIVE STAR, REIT MANAGEMENT&nbsp;&amp;
RESEARCH&nbsp;LLC, OR RMR&nbsp;LLC, REIT MANAGEMENT&nbsp;&amp; RESEARCH&nbsp;INC., OR RMR INC, AFFILIATES INSURANCE COMPANY, OR AIC, D&amp;R YONKERS&nbsp;LLC, SELECT INCOME REIT, OR SIR, AND THEIR
RELATED PERSONS AND ENTITIES,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>COMPLIANCE WITH, AND CHANGES TO, FEDERAL, STATE AND LOCAL LAWS AND REGULATIONS, ACCOUNTING RULES, TAX LAWS AND
SIMILAR MATTERS,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>LIMITATIONS IMPOSED ON OUR BUSINESS AND OUR ABILITY TO SATISFY COMPLEX RULES IN ORDER FOR US TO QUALIFY AS A
REIT FOR U.S. FEDERAL INCOME TAX PURPOSES,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>COMPETITION WITHIN THE HEALTHCARE AND REAL ESTATE INDUSTRIES,
AND</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>ACTS OF TERRORISM, OUTBREAKS OF SO CALLED PANDEMICS OR OTHER MANMADE OR NATURAL DISASTERS BEYOND OUR
CONTROL.</B></FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>2</FONT></P>

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<P style='font-family:times;page-break-before:always'></p>
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<P style="font-family:times;"><FONT SIZE=2><A HREF="#bg15401a_main_toc">Table of Contents</A></FONT></P>

<P style="font-family:times;"><FONT SIZE=2><B>FOR EXAMPLE:</B></FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>FIVE STAR IS OUR LARGEST TENANT AND MANAGES CERTAIN OF OUR SENIOR LIVING COMMUNITIES FOR OUR ACCOUNT AND FIVE
STAR MAY EXPERIENCE FINANCIAL DIFFICULTIES AS A RESULT OF A NUMBER OF FACTORS, INCLUDING, BUT NOT LIMITED TO:</B></FONT><FONT SIZE=2>
<BR><BR></FONT>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>MATERIAL WEAKNESSES IN ITS INTERNAL CONTROLS,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>CHANGES IN MEDICARE AND MEDICAID PAYMENTS, INCLUDING THOSE THAT MAY RESULT FROM THE ACA AND
EXISTING OR PROPOSED LEGISLATION OR REGULATIONS, WHICH COULD RESULT IN REDUCED RATES OR A FAILURE OF SUCH RATES TO COVER FIVE STAR'S COSTS,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>CHANGES IN REGULATIONS AFFECTING FIVE STAR'S
OPERATIONS,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>CHANGES IN THE ECONOMY GENERALLY OR GOVERNMENTAL POLICIES WHICH REDUCE THE DEMAND FOR THE
SERVICES FIVE STAR OFFERS,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>INCREASES IN INSURANCE AND TORT LIABILITY AND OTHER
COSTS,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>INEFFECTIVE INTEGRATION OF NEW ACQUISITIONS AND LEASED AND MANAGED COMMUNITIES,
AND</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>INSUFFICIENT ACCESS TO CAPITAL AND
FINANCING,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD></DL>
</DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>IF FIVE STAR'S OPERATIONS BECOME UNPROFITABLE, FIVE STAR MAY BECOME UNABLE TO PAY OUR RENTS AND WE MAY NOT
RECEIVE OUR EXPECTED RETURN ON OUR INVESTED CAPITAL OR ADDITIONAL AMOUNTS FROM OUR SENIOR LIVING COMMUNITIES THAT ARE MANAGED BY FIVE STAR,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>OUR ABILITY TO MAKE FUTURE DISTRIBUTIONS AND TO MAKE PAYMENTS OF PRINCIPAL AND INTEREST ON OUR NOTES OR OUR
OTHER INDEBTEDNESS DEPENDS UPON A NUMBER OF FACTORS, INCLUDING OUR FUTURE EARNINGS, THE CAPITAL COSTS WE INCUR TO LEASE AND OPERATE OUR PROPERTIES AND OUR WORKING CAPITAL REQUIREMENTS. WE MAY BE
UNABLE TO PAY OUR DEBT OBLIGATIONS OR TO MAINTAIN OUR CURRENT RATE OF DISTRIBUTIONS ON OUR COMMON SHARES AND FUTURE DISTRIBUTIONS MAY BE REDUCED OR
ELIMINATED,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>OUR ABILITY TO GROW OUR BUSINESS AND INCREASE OUR DISTRIBUTIONS DEPENDS IN LARGE PART UPON OUR ABILITY TO BUY
PROPERTIES AND ARRANGE FOR THEIR PROFITABLE OPERATION OR LEASE THEM FOR RENTS, LESS PROPERTY OPERATING EXPENSES, THAT EXCEED OUR CAPITAL COSTS. WE MAY BE UNABLE TO IDENTIFY PROPERTIES THAT WE WANT TO
ACQUIRE OR TO NEGOTIATE ACCEPTABLE PURCHASE PRICES, ACQUISITION FINANCING, MANAGEMENT CONTRACTS OR LEASE TERMS FOR NEW
PROPERTIES,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>OUR TENANTS MAY EXPERIENCE LOSSES AND BECOME UNABLE TO PAY OUR
RENTS,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>CONTINUED AVAILABILITY OF BORROWINGS UNDER OUR REVOLVING CREDIT FACILITY IS SUBJECT TO OUR SATISFYING CERTAIN
FINANCIAL COVENANTS AND MEETING OTHER CUSTOMARY CREDIT FACILITY CONDITIONS THAT WE MAY BE UNABLE TO SATISFY,</B></FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>3</FONT></P>

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<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>ACTUAL COSTS UNDER OUR REVOLVING CREDIT FACILITY OR OTHER FLOATING RATE CREDIT FACILITIES WILL BE HIGHER THAN
LIBOR PLUS A PREMIUM BECAUSE OF OTHER FEES AND EXPENSES ASSOCIATED WITH SUCH FACILITIES,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>THE MAXIMUM BORROWING AVAILABILITY UNDER OUR REVOLVING CREDIT FACILITY AND TERM LOAN MAY BE INCREASED TO UP TO
$2.2 BILLION ON A COMBINED BASIS IN CERTAIN CIRCUMSTANCES. HOWEVER, INCREASING THE MAXIMUM BORROWING AVAILABILITY UNDER OUR REVOLVING CREDIT FACILITY AND TERM LOAN IS SUBJECT TO OUR OBTAINING
ADDITIONAL COMMITMENTS FROM LENDERS, WHICH MAY NOT OCCUR,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>WE HAVE THE OPTION TO EXTEND THE MATURITY DATE OF OUR REVOLVING CREDIT FACILITY UPON PAYMENT OF A FEE AND
MEETING CERTAIN OTHER CONDITIONS. HOWEVER, THE APPLICABLE CONDITIONS MAY NOT BE MET,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>THE MARGINS USED TO DETERMINE THE INTEREST RATE PAYABLE ON OUR REVOLVING CREDIT FACILITY AND TERM LOAN AND THE
FACILITY FEE PAYABLE ON OUR REVOLVING CREDIT FACILITY ARE BASED ON OUR CREDIT RATINGS. FUTURE CHANGES IN OUR CREDIT RATINGS MAY CAUSE THE INTEREST AND FEES WE PAY TO
CHANGE,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>CONTINGENCIES IN OUR ACQUISITION AND SALE AGREEMENTS MAY NOT BE SATISFIED AND OUR PENDING SALES OR
ACQUISITIONS AND ANY RELATED MANAGEMENT AGREEMENTS MAY NOT OCCUR, MAY BE DELAYED OR THE TERMS OF SUCH TRANSACTIONS MAY
CHANGE,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>WE MAY BE UNABLE TO REPAY OUR DEBT OBLIGATIONS WHEN THEY BECOME
DUE,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>SOME OF OUR TENANTS MAY NOT RENEW EXPIRING LEASES, AND WE MAY BE UNABLE TO LOCATE NEW TENANTS TO MAINTAIN OR
INCREASE THE HISTORICAL OCCUPANCY RATES OF, OR RENTS FROM, OUR PROPERTIES,</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>RENTS THAT WE CAN CHARGE AT OUR PROPERTIES MAY DECLINE BECAUSE OF CHANGING MARKET CONDITIONS OR OTHERWISE,
AND</B></FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2><B>WE BELIEVE THAT OUR RELATIONSHIPS WITH OUR RELATED PARTIES, INCLUDING FIVE STAR, RMR&nbsp;LLC, RMR INC, AIC,
D&amp;R YONKERS&nbsp;LLC, SIR AND OTHERS AFFILIATED WITH THEM MAY BENEFIT US AND PROVIDE US WITH COMPETITIVE ADVANTAGES IN OPERATING AND GROWING OUR BUSINESS. IN FACT, THE ADVANTAGES WE BELIEVE WE MAY
REALIZE FROM THESE RELATIONSHIPS MAY NOT MATERIALIZE.</B></FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT
SIZE=2><B>THESE RESULTS COULD OCCUR DUE TO MANY DIFFERENT CIRCUMSTANCES, SOME OF WHICH ARE BEYOND OUR CONTROL, SUCH AS CHANGED MEDICARE AND MEDICAID RATES, NEW LEGISLATION
OR REGULATIONS AFFECTING OUR BUSINESS OR THE BUSINESSES OF OUR TENANTS OR MANAGERS, CHANGES IN OUR TENANTS' OR MANAGERS' REVENUES OR COSTS, CHANGES IN OUR TENANTS' OR MANAGERS' FINANCIAL CONDITIONS,
ACTS OF TERRORISM, NATURAL DISASTERS OR CHANGES IN CAPITAL MARKETS OR THE ECONOMY GENERALLY.</B></FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT
SIZE=2><B>THE INFORMATION CONTAINED ELSEWHERE IN THIS PROSPECTUS, AND IN OUR FILINGS WITH THE SEC, INCLUDING UNDER THE CAPTION "RISK FACTORS" IN OUR ANNUAL REPORT OR
INCORPORATED HEREIN OR THEREIN, IDENTIFIES OTHER IMPORTANT FACTORS THAT COULD CAUSE DIFFERENCES FROM OUR FORWARD LOOKING STATEMENTS. OUR FILINGS WITH THE SEC ARE AVAILABLE ON THE SEC'S WEBSITE AT
WWW.SEC.GOV.</B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>4</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT
SIZE=2><B>YOU SHOULD NOT PLACE UNDUE RELIANCE UPON OUR FORWARD LOOKING STATEMENTS.  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT SIZE=2><B>EXCEPT AS REQUIRED BY LAW, WE DO NOT INTEND TO UPDATE OR CHANGE ANY FORWARD LOOKING STATEMENTS AS A RESULT OF NEW INFORMATION, FUTURE
EVENTS OR OTHERWISE.</B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="da15401_statement_concerning_limited_liability"> </A>
<A NAME="toc_da15401_4"> </A>
<BR></FONT><FONT SIZE=2><B>  STATEMENT CONCERNING LIMITED LIABILITY    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT SIZE=2><B>THE AMENDED AND RESTATED DECLARATION OF TRUST ESTABLISHING SENIOR HOUSING PROPERTIES TRUST, DATED SEPTEMBER 20,
1999, AS AMENDED AND SUPPLEMENTED, AS FILED WITH THE STATE DEPARTMENT OF ASSESSMENTS AND TAXATION OF MARYLAND, PROVIDES THAT NO TRUSTEE, OFFICER, SHAREHOLDER, EMPLOYEE OR AGENT OF SENIOR HOUSING
PROPERTIES TRUST SHALL BE HELD TO ANY PERSONAL LIABILITY, JOINTLY OR SEVERALLY, FOR ANY OBLIGATION OF, OR CLAIM AGAINST, SENIOR HOUSING PROPERTIES TRUST. ALL PERSONS DEALING WITH SENIOR HOUSING
PROPERTIES TRUST IN ANY WAY SHALL LOOK ONLY TO THE ASSETS OF SENIOR HOUSING PROPERTIES TRUST FOR THE PAYMENT OF ANY SUM OR THE PERFORMANCE OF ANY OBLIGATION.</B></FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>5</FONT></P>

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<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="dc15401_ratio_of_earnings_to_fixed_charges"> </A>
<A NAME="toc_dc15401_1"> </A>
<BR></FONT><FONT SIZE=2><B>  RATIO OF EARNINGS TO FIXED CHARGES    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following table sets forth our ratio of earnings to fixed charges for each of the periods shown. </FONT></P>
 <DIV style="padding:0pt;position:relative;width:80%;margin-left:10%;">
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<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="73pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="25pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="25pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="25pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="25pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
<TD WIDTH="7pt" ALIGN="RIGHT" style="font-family:times;"></TD>
<TD WIDTH="25pt" style="font-family:times;"></TD>
<TD WIDTH="12pt" style="font-family:times;"></TD>
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<TR VALIGN="BOTTOM">
<TH ALIGN="LEFT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="LEFT" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT><BR></TH>
<TH ROWSPAN=2 style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=14 ROWSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Year Ended December&nbsp;31, </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
</TR>
<TR VALIGN="BOTTOM">
<TH ALIGN="LEFT" style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT><BR></TH>
<TH ROWSPAN=2 style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ROWSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>Three&nbsp;Months<BR>
Ended<BR>
March&nbsp;31,&nbsp;2015 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
</TR>
<TR VALIGN="BOTTOM">
<TH ALIGN="LEFT" style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT><BR></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>2014 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>2013 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>2012 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>2011 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH COLSPAN=2 ALIGN="CENTER" style="font-family:times;border-bottom:solid #000000 1.0pt;"><FONT SIZE=1><B>2010 </B></FONT></TH>
<TH style="font-family:times;"><FONT SIZE=1>&nbsp;</FONT></TH>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD VALIGN="BOTTOM" style="font-family:times;"><p style="font-family:times;margin-left:10pt;text-indent:-10pt;"><FONT SIZE=2> </FONT><FONT SIZE=2>Ratio of earnings to fixed charges</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>2.1x</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>2.2x</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>2.6x</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>2.1x</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>2.5x</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD ALIGN="RIGHT" VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>2.5x</FONT></TD>
<TD VALIGN="BOTTOM" style="font-family:times;"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
</TABLE></DIV>
<!-- end of user-specified TAGGED TABLE -->
 </DIV>
 <P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;For
purposes of calculating the ratios above, earnings have been calculated by adding fixed charges to income from continuing operations (including gains on sales of properties, if any)
before income tax expense and equity in earnings (losses) of an investee. Fixed charges consist of interest expense (including net amortization of debt discounts, premiums and deferred financing
fees). The ratios of earnings to fixed charges were computed by dividing our earnings by fixed charges. We did not have any preferred securities outstanding during any of the periods presented above,
and therefore our ratio of earnings to combined fixed charges and preferred share distributions is the same as the ratio of earnings to fixed charges for each of the periods presented above. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="dc15401_use_of_proceeds"> </A>
<A NAME="toc_dc15401_2"> </A>
<BR></FONT><FONT SIZE=2><B>  USE OF PROCEEDS    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unless otherwise described in a prospectus supplement, we intend to use the net proceeds that we receive from the sale of any
securities covered by this prospectus for general business purposes, which may include acquiring and investing in additional properties and the repayment of borrowings under our revolving credit
facility or other debt. Until we apply the proceeds from a sale of securities covered by this prospectus to their stated purposes, we may invest those
proceeds in short term investments, including repurchase agreements, some or all of which may not be investment grade. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unless
otherwise set forth in the applicable prospectus supplement, we will not receive any of the proceeds of the sale by any selling security holder of securities covered by this
prospectus. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="dc15401_description_of_debt_securities"> </A>
<A NAME="toc_dc15401_3"> </A>
<BR></FONT><FONT SIZE=2><B>  DESCRIPTION OF DEBT SECURITIES    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;References in this "Description of Debt Securities" section to "we," "us," "our" or "SNH" mean Senior Housing Properties Trust and not
any of its consolidated subsidiaries, unless the context otherwise requires. The following is a summary of some general terms and provisions of debt securities that we may offer by this prospectus.
Because it is a summary, it does not contain all of the information that may be important to you. If you want more information, you should read the forms of indentures which we have filed as exhibits
to the registration statement of which this prospectus is a part. If we issue debt securities, we will file any final indentures, and any supplemental indentures or officer's certificates related to
the particular series of debt securities issued, with the SEC, and you should read those documents for further information about the terms and provisions of such debt securities. See "Where You Can
Find More Information." This summary is also subject to and qualified by reference to the descriptions of the particular terms of our debt securities to be described in the applicable prospectus
supplement. The applicable prospectus supplement may add to, update or change the terms of such debt securities from those described below. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
debt securities sold under this prospectus will be direct obligations of SNH and, unless otherwise stated in a prospectus supplement, will not be obligations of any of its
subsidiaries. Such debt obligations may be secured or unsecured, and may be senior or subordinated indebtedness. Our debt securities will be issued under one or more indentures between us and a
trustee. Any indenture will be subject to and governed by the Trust Indenture Act of 1939, as amended, or the Trust Indenture Act. The statements made in this prospectus relating to any indentures and
the debt securities to be issued under the indentures are summaries of certain anticipated provisions of the indentures and are not complete. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>6</FONT></P>

<HR NOSHADE>
<P style='font-family:times;page-break-before:always'></p>
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<A NAME="page_dc15401_1_7"> </A>

<P style="font-family:times;"><FONT SIZE=2><A HREF="#bg15401a_main_toc">Table of Contents</A></FONT></P>

<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>


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General  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We may issue debt securities that rank "senior," "senior subordinated" or "junior subordinated," and which may be convertible into
another security. The debt securities that we refer to as "senior" will be direct obligations of SNH and will rank equally and ratably in right of payment with our other indebtedness that is not
subordinated, without giving effect to collateral arrangements. We may issue debt securities that will be subordinated in right of payment to the prior payment in full of our senior debt, as defined
in the applicable prospectus supplement, and may rank equally and ratably with our other senior subordinated indebtedness, if any, without giving effect to collateral arrangements. We refer to these
as "senior subordinated" securities. We may also issue debt securities that may be subordinated in right of payment to the senior subordinated securities. These would be "junior subordinated"
securities. We have filed with the registration statement, of which this prospectus is a part, three separate forms of indenture, one for the senior securities, one for the senior subordinated
securities and one for the junior subordinated securities. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
may issue debt securities without limit as to aggregate principal amount, in one or more series, in each case as we establish in one or more supplemental indentures. We need not issue
all debt securities of one series at the same time. Unless we otherwise provide, we may reopen a series, without the consent of the holders of the series, for issuances of additional securities of
that series. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
anticipate that any indenture will provide that we may, but need not, designate more than one trustee under an indenture, each with respect to one or more series of debt securities.
Any trustee under any indenture may resign or be removed with respect to one or more series of debt securities, and we may appoint a successor trustee to act with respect to any such series. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
applicable prospectus supplement will describe the specific terms relating to the series of debt securities we will offer, including, where applicable, the
following:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the title and series designation and whether they are senior securities, senior subordinated securities or junior subordinated
securities; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the aggregate principal amount of the debt securities offered and any limit on the aggregate principal amount of that series that may
be authenticated and delivered; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the percentage of the principal amount at which we will issue the debt securities and, if other than the principal amount of the debt
securities, the portion of the principal amount of the debt securities payable upon maturity of the debt securities; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> if convertible, the initial conversion price, the conversion period and any other terms governing such conversion; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the stated maturity date; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any fixed or variable interest rate or rates per annum; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> whether such interest will be payable in cash or additional debt securities of the same series or will accrue and increase the
aggregate principal amount outstanding of such series; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the place where principal, premium, if any, and interest will be payable and where the debt securities can be surrendered for
transfer, exchange or conversion; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the date from which interest may accrue and any interest payment dates and any related record dates; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any sinking fund requirements; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any provisions for redemption or repurchase, including the redemption or repurchase price; </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>7</FONT></P>

<HR NOSHADE>
<P style='font-family:times;page-break-before:always'></p>
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<P style="font-family:times;"><FONT SIZE=2><A HREF="#bg15401a_main_toc">Table of Contents</A></FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> whether the debt securities are denominated or payable in U.S. dollars, a foreign currency or units of two or more currencies; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> whether the amount of payments of principal of or premium, if any, or interest on the debt securities may be determined with reference
to an index, formula or other method and the manner in which such amounts shall be determined; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the events of default and covenants of the debt securities, to the extent different from or in addition to those described in this
prospectus; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> whether we will issue the debt securities in certificated or book-entry form; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> whether the debt securities will be in registered or bearer form and, if in registered form, the denominations, if other than $2,000
and integral multiples of $1,000 in excess thereof, or, if in bearer form, the denominations and terms and conditions relating thereto; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> whether we will issue any of the debt securities in permanent global form and, if so, the terms and conditions, if any, upon which
interests in the global security may be exchanged, in whole or in part, for the individual debt securities represented by the global security; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any addition or change to the provisions relating to the defeasance or covenant defeasance provisions of, or the satisfaction and
discharge of, the debt securities; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> whether we will pay additional amounts on the debt securities in respect of any tax, assessment or governmental charge and, if so,
whether we will have the option to redeem the debt securities instead of making this payment; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the subordination provisions, if any, relating to the debt securities; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> if the debt securities are to be issued upon the exercise of warrants, the time, manner and place for such debt securities to be
authenticated and delivered; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any restriction or condition on the transferability of debt securities; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any addition or change to the provisions related to compensation and reimbursement of the trustee which applies to the debt
securities; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any addition or change to the provisions related to supplemental indentures both with and without the consent of the holders; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> provisions, if any, granting special rights to holders upon the occurrence of specified events; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any addition or change to the events of default which applies to any debt securities and any change in the right of the trustee or the
requisite holders of such debt securities to declare the principal amount thereof due and payable pursuant to the indenture; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any addition or change to the covenants set forth in the indenture, or described in this prospectus or any prospectus supplement, with
respect to such series of debt securities; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any other terms of debt securities of such series (which terms will not be inconsistent with the provisions of the Trust Indenture
Act, but may modify, amend, supplement or delete any of the terms of the indenture, including those described in this prospectus or any prospectus supplement, with respect to such series). </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
will describe in the applicable prospectus supplement any material U.S. federal income tax considerations applicable to the debt securities offered by such prospectus supplement. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
may issue debt securities at less than the principal amount payable at maturity. We refer to these securities as "original issue discount" securities. If material or applicable, we
will describe in the </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>8</FONT></P>

<HR NOSHADE>
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<P style="font-family:times;"><FONT SIZE=2><A HREF="#bg15401a_main_toc">Table of Contents</A></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>applicable
prospectus supplement special U.S. federal income tax considerations applicable to original issue discount securities. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Except
as may be described in any prospectus supplement, an indenture will not contain any other provisions that would limit our ability to incur indebtedness or that would afford
holders of the debt securities protection in the event of a highly leveraged or similar transaction involving us or in the event of a change in control. You should review carefully the applicable
prospectus supplement for information with respect to events of default and covenants applicable to the debt securities being offered. </FONT></P>

<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>


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Denominations, Interest, Registration and Transfer  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unless otherwise described in the applicable prospectus supplement, we will issue debt securities of any series that are registered
securities in minimum denominations of $2,000 and integral multiples of $1,000 in excess thereof, other than global securities which may be of any denomination. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unless
otherwise specified in the applicable prospectus supplement, we will pay the interest, principal and any premium at the corporate trust office of the trustee or, at our option, we
may make payment of interest by check mailed to the address of the person entitled to the payment as it appears in the applicable register or by wire transfer of funds to that person at an account
maintained within the United States or, in the case of global securities, in accordance with the procedures of the depositary for such securities. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
we do not punctually pay or otherwise provide for interest on any interest payment date, the defaulted interest will be paid either:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> to the person in whose name the debt security is registered at the close of business on a special record date the trustee will fix; or </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> in any other lawful manner, all as the applicable indenture describes. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;You
may have your debt securities divided into more debt securities of smaller authorized denominations or combined into fewer debt securities of larger authorized denominations, as long
as the total principal amount is not changed. We call this an "exchange." </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;You
may exchange or transfer debt securities at the office of the applicable trustee. The trustee acts as our agent for registering debt securities in the names of holders and
transferring debt securities. We may change this appointment to another entity or perform this role ourselves. The entity performing the role of maintaining the list of registered holders is called
the "registrar." The registrar will also perform transfers. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;You
will not be required to pay a service charge to transfer or exchange debt securities, but you may be required to pay for any tax or other governmental charge associated with the
exchange or transfer. The registrar will make the transfer or exchange only if it is satisfied with your proof of ownership. </FONT></P>

<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>



<!-- COMMAND=STYLE_ADDED,"margin-left:10.0pt;text-indent:-10.0pt;" -->


Merger, Consolidation or Sale of Assets  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We may not consolidate with or merge into any other person or convey, transfer or lease all or substantially all of our properties and
assets to any other person (other than one of our direct or indirect wholly owned subsidiaries), and we may not permit any other person (other than one of our direct or indirect wholly owned
subsidiaries) to consolidate with or merge into us, unless:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> we are the surviving entity or, in case we consolidate with or merge into another person, the person formed by such consolidation or
merger is, or in case we convey, transfer or lease all or substantially all of our properties and assets to any person, such acquiring person is, an entity organized and validly existing under the
laws of the United States of America, any state thereof </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>9</FONT></P>

<HR NOSHADE>
<P style='font-family:times;page-break-before:always'></p>
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<P style="font-family:times;"><FONT SIZE=2><A HREF="#bg15401a_main_toc">Table of Contents</A></FONT></P>

<UL>
<UL>

<P style="font-family:times;"><FONT SIZE=2>or
the District of Columbia and expressly assumes, by a supplemental indenture executed and delivered to the trustee, in form satisfactory to the trustee, the due and punctual payment of the principal
of and any premium and interest on all applicable debt securities issued under the applicable indenture and the performance or observance of every covenant of the applicable indenture on our part to
be performed or observed; </FONT></P>

</UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> immediately after giving effect to such transaction, and treating any indebtedness which becomes an obligation of us or any of our
subsidiaries as a result of such transaction as having been incurred by us or such subsidiary at the time of such transaction, no event of default, and no event which, after notice or lapse of time or
both, would become an event of default, in each case under the applicable indenture, has happened and is continuing; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> we have delivered to the trustee an officer's certificate and an opinion of counsel, each stating that such consolidation, merger,
conveyance, transfer or lease and, if a supplemental indenture is required in connection with such transaction, such supplemental indenture comply with the applicable indenture provisions described in
this paragraph and that all conditions precedent provided for in the applicable indenture relating to such transaction have been complied with. </FONT></DD></DL>
</UL>

<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>


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Events of Default and Related Matters  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Events of Default.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;The term "event of default" for any series of debt securities means any of the
following:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> we do not pay the principal of or any premium on a debt security of that series when due; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> we do not pay interest on a debt security of that series within 30&nbsp;days after its due date; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> we do not deposit any sinking fund payment for that series within 30&nbsp;days after its due date; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> we remain in breach of any other covenant of the applicable indenture (other than a covenant added to the indenture solely for the
benefit of another series) for 60&nbsp;days after we receive a notice of default specifying the breach and requiring that it be remedied. Only the trustee or holders of at least a majority in
principal amount of outstanding debt securities of the affected series may send the notice; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> we experience specified events of bankruptcy, insolvency or reorganization; or </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any other event of default described in the applicable prospectus supplement occurs. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2><I> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Remedies if an Event of Default Occurs.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;If an event of default has occurred and has not been cured, the trustee or the holders of not
less than a
majority in principal amount of the outstanding debt securities of the affected series may declare the entire principal amount of all the debt securities of that series to be due and payable
immediately. If an event of default occurs because we experience specified events of bankruptcy, insolvency or reorganization, the principal amount of all the debt securities of that series will be
automatically accelerated and become immediately due and payable, without any action by the trustee or any holder. At any time after the trustee or the holders have accelerated any series of debt
securities, but before a judgment or decree for payment of the money due has been obtained, the holders of a majority in principal amount of the outstanding debt securities of the affected series may,
under certain circumstances, rescind and annul such acceleration. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Except
in cases of default where the trustee has some special duties, the trustee is not required to take any action under the applicable indenture at the request of any holders unless
the holders offer the trustee reasonable protection from expenses and liability. We refer to this as an "indemnity." If reasonable indemnity is provided, the holders of not less than a majority in
principal amount of the outstanding debt securities of the relevant series may direct the time, method and place of conducting any lawsuit or other formal legal action seeking any remedy available to
the trustee. These majority </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>10</FONT></P>

<HR NOSHADE>
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<P style="font-family:times;"><FONT SIZE=2>holders
may also direct the trustee in performing any other action under the applicable indenture, subject to certain limitations. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Before
you bypass the trustee and bring your own lawsuit or other formal legal action or take other steps to enforce your rights or protect your interests relating to the applicable
indenture or debt securities issued under such indenture, the following must occur:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> you must give the trustee written notice that an event of default has occurred and is continuing; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the holders of at least a majority in principal amount of all outstanding debt securities of the relevant series must make a written
request that the trustee take action because of the default and must offer reasonable indemnity to the trustee against the cost and other liabilities of taking that action; and </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the trustee must have not taken action for 60&nbsp;days after receipt of the notice, request and offer of indemnity and must have
not received from the holders of a majority in principal amount of all outstanding debt securities of the relevant series other conflicting directions within such 60&nbsp;day period. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>However,
you are entitled at any time to bring a lawsuit for the payment of money due on your debt security after its due date. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Every
year we will furnish to the trustee a written statement by certain of our officers certifying that, to their best knowledge, we are in compliance with the applicable indenture and
the debt securities, or else specifying any default. </FONT></P>

<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>


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Modification of an Indenture  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;There are three types of changes we can make to the indentures and our debt securities: </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><I> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Changes Requiring Your Approval.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;First, we cannot make certain changes to the indentures and our debt securities without the approval
of each holder
of debt securities affected by the change. The following is a list of those types of changes:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> change the stated maturity of the principal of, or interest on, a debt security; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> reduce the principal of, or the rate of interest on, a debt security; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> reduce the amount of any premium due upon redemption; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> reduce the amount of principal of an original issue discount security payable upon acceleration of its maturity; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> change the currency or place of payment on a debt security; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> impair a holder's right to sue for payment on or after the stated maturity of a debt security; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> in the case of a subordinated debt security, modify the subordination provisions of such debt security in a manner that is adverse to
the holders; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> reduce the percentage of holders of debt securities whose consent is needed to modify or amend an indenture; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> reduce the percentage of holders of debt securities whose consent is needed to waive compliance with certain provisions of an
indenture or certain defaults and their consequences; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> waive past defaults in the payment of principal of or premium, if any, or interest on the debt securities or in respect of any
covenant or provision that cannot be modified or amended without the approval of each holder of the debt securities; or </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> modify any of the foregoing provisions. </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>11</FONT></P>

<HR NOSHADE>
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<P style="font-family:times;"><FONT SIZE=2><I> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Changes Requiring Majority Approval.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;Second, certain changes require the approval of holders of not less than a majority in principal
amount of the
outstanding debt securities of the affected series. We require the same majority vote to obtain a waiver of a past default. However, we cannot obtain a waiver of a payment default or any other aspect
of an indenture or the debt securities listed in the first category described above under "&#151;Changes Requiring Your Approval" without the consent of each holder of debt securities affected
by the waiver. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><I> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Changes Not Requiring Approval.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;Third, certain changes do not require any approval of holders of debt securities. These
include:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> to evidence the assumption by a successor obligor of our obligations; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> to add to our covenants for the benefit of holders of debt securities of all or any series or to surrender any right or power
conferred upon us; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> to add any additional events of default for the benefit of holders of all or any series of debt securities; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> to add to or change any provisions necessary to permit or facilitate the issuance of debt securities in bearer form, registrable or
not registrable as to principal, and with or without interest coupons, or to permit or facilitate the issuance of debt securities in uncertificated form; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> to add to, change or eliminate any of the provisions, so long as such addition, change or elimination does not apply to any debt
security of any existing series of debt security entitled to the benefit of such provision or modify the rights of the holder of any such debt security with respect to such provision or such addition,
change or elimination only becomes effective when there is no such security outstanding; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> to add guarantees of or to secure all or any series of the debt securities; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> to establish the forms or terms of debt securities of any series; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> to evidence and provide for the acceptance of appointment of a successor trustee; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> to cure any ambiguity, to correct or supplement any provision in the applicable indenture which may be defective or inconsistent with
any other provision contained therein or to conform the terms of the indenture that are applicable to a series of debt securities to the description of the terms of such debt securities in the
offering memorandum, prospectus supplement or other offering document applicable to such debt securities at the time of initial sale thereof; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> to permit or facilitate the defeasance or satisfaction and discharge of debt securities of any series; provided that such action does
not adversely affect the interests of any holder of debt securities in any material respect; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> to prohibit the authentication and delivery of additional series of debt securities; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> to add to or change or eliminate any provision as shall be necessary or desirable in accordance with any amendments to the Trust
Indenture Act; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> to comply with the rules of any applicable depositary; or </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> to change anything that does not adversely affect the interests of the holders of debt securities of any series in any material
respect. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2><I> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Further Details Concerning Approval.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;Debt securities are not considered outstanding, and therefore the holders thereof are not eligible
to vote or
consent or give their approval or take other action under the applicable indenture, if we have deposited or set aside in trust for you money for their payment or redemption or if we or one of our
affiliates own them. Debt securities are also not considered to be outstanding and therefore eligible to vote or consent or give their approval or take other action under </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>12</FONT></P>

<HR NOSHADE>
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<P style="font-family:times;"><FONT SIZE=2>the
applicable indenture if they have been fully defeased or discharged, as described below under "&#151;Discharge, Defeasance and Covenant Defeasance&#151;Discharge" or
"&#151;Full Defeasance." </FONT></P>

<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>


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Discharge, Defeasance and Covenant Defeasance  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2><I> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Discharge.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;We may discharge our obligations to holders of any series of debt securities that have become due and payable or will become
due and
payable at their stated maturity within one year, or are to be called for redemption within one year, by depositing or causing to be deposited with the trustee, in trust, funds in the applicable
currency in an amount sufficient to pay the debt securities of such series, including any premium and interest to the date of such deposit (in the case of debt securities which have become due and
payable) or to such stated maturity or redemption date, as applicable. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><I> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Full Defeasance.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;We can, under particular circumstances, effect a full defeasance of any series of debt securities. By this we mean we
can legally
release ourselves from any payment or other obligations on the debt securities if, among other things, we put in place the arrangements described below to pay those debt securities and deliver certain
certificates and opinions to the trustee:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> we must irrevocably deposit (or cause to be deposited), in trust, for the benefit of all direct holders of the debt securities of such
series money or government obligations (or, in some circumstances, depository receipts representing such government obligations), or a combination thereof, that will provide funds in an amount
sufficient to pay the debt securities of such series, including any premium and interest on the debt securities of such series at their stated maturity or applicable redemption date (a "government
obligation" for these purposes means, with respect to any series of debt securities, securities that are not callable or redeemable at the option of the issuer thereof and are (1)&nbsp;direct
obligations of the government that issued the currency in which such series is denominated (or, if such series is denominated in euros, the direct obligations of any government that is a member of the
European Monetary Union) for the payment of which its full faith and credit is pledged or (2)&nbsp;obligations of a person controlled or supervised by and acting as an agency or instrumentality of
such government the payment of which is unconditionally guaranteed as a full faith and credit obligation by such government); and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> we must deliver to the trustee a legal opinion stating that the current U.S. federal income tax law has changed or an Internal Revenue
Service, or IRS, ruling has been issued, in each case to the effect that holders of the outstanding debt securities of such series will not recognize gain or loss for federal income tax purposes as a
result of such full defeasance and will be subject to federal income tax on the same amounts and in the same manner and at the same times as would have been the case if such full defeasance had not
occurred. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Notwithstanding
the foregoing, the following rights and obligations will survive full defeasance:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> your right to receive payments from the trust when payments are due; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> our obligations relating to registration and transfer of debt securities and lost or mutilated certificates; and </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> our obligations to maintain a payment office and to hold moneys for payment in trust. </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>13</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2><I> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Covenant Defeasance.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;Under current U.S. federal income tax law, we can make the same type of deposit described above with respect to a
series of debt
securities and be released from the obligations imposed by most of the covenants with respect to such series and provisions of the applicable indenture with respect to such series, and we may omit to
comply with those covenants and provisions without creating an event of default. This is called "covenant defeasance." </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
we accomplish covenant defeasance, the following provisions of an indenture and the debt securities of such series would no longer
apply:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> most of the covenants applicable to such series of debt securities and any events of default for failure to comply with those
covenants; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any subordination provisions; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> certain other events of default as set forth in any prospectus supplement. </FONT></DD></DL>
</UL>

<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>


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Conversion and Exchange Rights  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The terms and conditions, if any, upon which the debt securities are convertible into or exchangeable for common or preferred shares,
other debt securities or other property will be set forth in the applicable prospectus supplement. Such terms will include whether the debt securities are convertible into or exchangeable for common
or preferred shares, other debt securities or other property, the conversion or exchange price (or manner of calculation thereof), the conversion or exchange period, whether conversion or exchange
will be at the option of the holders, the events requiring an adjustment of the conversion or exchange price, provisions affecting conversion or exchange in the event of the redemption of such debt
securities and any restrictions on conversion or exchange, including restrictions directed at maintaining our REIT status under the Internal Revenue Code of 1986, as amended, or the Code. </FONT></P>

<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>


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Subordination  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We will describe in the applicable prospectus supplement the terms and conditions, if any, upon which any series of senior subordinated
securities or junior subordinated securities is subordinated to debt securities of another series or to our other indebtedness. The terms will include a description
of:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the indebtedness ranking senior to the debt securities being offered; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the restrictions, if any, on payments to the holders of the debt securities being offered while a default with respect to the senior
indebtedness is continuing; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the restrictions, if any, on payments to the holders of the debt securities being offered following an event of default with respect
to such debt securities; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> provisions requiring holders of the debt securities being offered to remit payments to holders of senior indebtedness. </FONT></DD></DL>
</UL>

<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>


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Global Debt Securities  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We may issue the debt securities of a series in whole or in part in the form of one or more registered global securities that we will
deposit with a depositary or with a nominee for a depositary identified in the applicable prospectus supplement and registered in the name of such depositary or nominee. In such case, we will issue
one or more registered global securities denominated in an amount equal to the aggregate principal amount of all of the debt securities of the series to be issued and represented by such registered
global security or securities. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>14</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unless
and until it is exchanged in whole or in part for debt securities in definitive registered form, a registered global security may not be transferred except as a
whole:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> by the depositary for such registered global security to its nominee; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> by a nominee of the depositary to the depositary or another nominee of the depositary; or </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> by the depositary or its nominee to a successor of the depositary or a nominee of the successor. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
prospectus supplement relating to a series of debt securities will describe the specific terms of the depositary arrangement with respect to any portion of such series represented by
a registered global security. We currently anticipate that the following provisions will apply to all depositary arrangements for debt securities:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> ownership of beneficial interests in a registered global security will be limited to persons that have accounts with the depositary
for the registered global security, those persons being referred to as "participants," or persons that may hold interests through participants; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> upon the issuance of a registered global security, the depositary for the registered global security will credit, on its book-entry
registration and transfer system, the participants' accounts with the respective principal amounts of the debt securities represented by the registered global security beneficially owned by the
participants; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any dealers, underwriters or agents participating in the distribution of the debt securities will designate the accounts to be
credited; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> ownership of any beneficial interest in the registered global security will be shown on, and the transfer of any ownership interest
will be effected only through, records maintained by the depositary for the registered global security (with respect to interests of participants) and on the records of participants (with respect to
interests of persons holding through participants). </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
laws of some states may require that certain purchasers of securities take physical delivery of the securities in definitive form. These laws may limit the ability of those persons
to own, transfer or pledge beneficial interests in registered global securities. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;So
long as the depositary for a registered global security, or its nominee, is the registered owner of the registered global security, the depositary or the nominee, as the case may be,
will be considered the sole owner or holder of the debt securities represented by the registered global security for all purposes under the applicable indenture. Except as set forth below, owners of
beneficial interests in a registered global security:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> will not be entitled to have the debt securities represented by a registered global security registered in their names; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> will not receive or be entitled to receive physical delivery of the debt securities in the definitive form; and </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> will not be considered the owners or holders of the debt securities under the applicable indenture. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accordingly,
each person owning a beneficial interest in a registered global security must rely on the procedures of the depositary for the registered global security and, if the person
is not a participant, on the procedures of a participant through which the person owns its interest, to exercise any rights of a holder under the applicable indenture. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
understand that under currently existing industry practices, if we request any action of holders or if an owner of a beneficial interest in a registered global security desires to
give or take any action that a holder is entitled to give or take under an indenture, the depositary for the registered global </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>15</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>security
would authorize the participants holding the relevant beneficial interests to give or take the action, and those participants would authorize beneficial owners owning through those
participants to give or take the action or would otherwise act upon the instructions of beneficial owners holding through them. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
will make payments of principal of and premium, if any, and interest, if any, on debt securities represented by a registered global security registered in the name of a depositary or
its nominee to the depositary or its nominee, as the case may be, as the registered owners of the registered global security. Neither we nor any trustee or any other agent of us or a trustee will be
responsible or liable for any aspect of the records relating to, or payments made on account of, beneficial ownership interests in the registered global security or for maintaining, supervising or
reviewing any records relating to the beneficial ownership interests. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
expect that the depositary for any debt securities represented by a registered global security, upon receipt of any payments of principal and premium, if any, and interest, if any, in
respect of the registered global security, will immediately credit participants' accounts with payments in amounts proportionate to their respective beneficial interests in the registered global
security as shown on the records of the depositary. We also expect that standing customer instructions and customary practices will govern payments by participants to owners of beneficial interests in
the registered global security held through the participants, as is now the case with the securities held for the accounts of customers in bearer form or registered in "street name." We also expect
that any of these payments will be the responsibility of the participants. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;No
registered global security may be exchanged in whole or in part for debt securities registered, and no transfer of a registered global security in whole or in part may be registered,
in the name of any person other than the depositary for such registered global security, unless (1)&nbsp;such depositary notifies us that it is unwilling or unable to continue as depositary for such
registered global security or has ceased to be a clearing agency registered under the Exchange Act and we fail to appoint an eligible successor depositary within 90&nbsp;days, (2)&nbsp;an event of
default shall have occurred and be continuing with respect to such debt securities, or (3)&nbsp;circumstances, if any, exist in addition to or in lieu of the foregoing as have been specified for
that purpose in an applicable prospectus supplement. In any such case, the affected registered global security may be exchanged in whole or in part for debt securities in definitive form and the
applicable trustee will register any such debt securities in such name or names as such depositary directs. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
currently anticipate that certain registered global securities will be deposited with, or on behalf of, The Depository Trust Company, New York, New York, or DTC, and will be
registered in the name of Cede&nbsp;&amp;&nbsp;Co., as the nominee of DTC. DTC has advised us that DTC is a limited-purpose trust company organized under the New York Banking Law, a "banking
organization" within the meaning of the New York Banking Law, a member of the Federal Reserve System, a "clearing corporation" within the meaning of the New York Uniform Commercial Code and a
"clearing agency" registered pursuant to the provisions of Section&nbsp;17A of the Exchange Act. DTC holds securities that its participants, or direct participants, deposit with DTC. DTC also
facilitates the post-trade settlement among direct participants of sales and other securities transactions in deposited securities, through electronic computerized book-entry transfers and pledges
between direct participants' accounts. This eliminates the need for physical movement of securities certificates. Direct participants include both U.S. and non-U.S. securities brokers and dealers,
banks, trust companies, clearing corporations, and certain other organizations. DTC is a wholly owned subsidiary of The Depository Trust&nbsp;&amp; Clearing Corporation, or DTCC. DTCC is the holding
company for DTC, National Securities Clearing Corporation and Fixed Income Clearing Corporation, all of which are registered clearing agencies. DTCC is owned by the users of its regulated
subsidiaries. Access to the DTC system is also available to others such as both U.S. and non-U.S. securities brokers and dealers, banks, trust companies and clearing corporations that clear through or
maintain a custodial relationship with a direct participant, either directly or indirectly. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>16</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>The
rules applicable to DTC and its direct participants are on file with the SEC. The information in this paragraph concerning DTC and DTC's book-entry system has been obtained from sources that we
believe to be reliable, but we take no responsibility for the accuracy thereof. In the event registered global securities are deposited with, or on behalf of, a depositary other than DTC, we will
describe additional or differing terms of the depositary arrangements in the applicable prospectus supplement relating to that particular series of debt securities. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
may also issue bearer debt securities of a series in the form of one or more global securities, referred to as "bearer global securities." We currently anticipate that we will deposit
these bearer global securities with a common depositary for Euroclear Bank&nbsp;S.A./N.V. and Clearstream Banking, soci&eacute;t&eacute; anonyme, or with a nominee for the depositary
identified in the prospectus supplement relating to that series. The prospectus supplement relating to a series of debt securities represented by a bearer global security will describe the specific
terms and procedures, including the specific terms of the depositary arrangement and any specific procedures for the issuance of debt securities in definitive form in exchange for a bearer global
security, with respect to the portion of the series represented by a bearer global security. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Neither
we nor any trustee assumes any responsibility for the performance by DTC or any other depositary or its participants of their respective obligations, including obligations that
they have under the rules and procedures that govern their operations. </FONT></P>

<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>


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Governing Law  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The indentures and our debt securities will be governed by and construed in accordance with the laws of the State of New York. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="de15401_description_of_shares_of_beneficial_interest"> </A>
<A NAME="toc_de15401_1"> </A>
<BR></FONT><FONT SIZE=2><B>  DESCRIPTION OF SHARES OF BENEFICIAL INTEREST    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;References in this "Description of Shares of Beneficial Interest" section to "we," "us" or "our" mean Senior Housing Properties Trust
and not any of its consolidated subsidiaries, unless the context otherwise requires. The following description of the terms of our shares of beneficial interest is only a summary. For a complete
description, please refer to our declaration of trust and bylaws, which have previously been filed with the SEC and are incorporated by reference in this prospectus, and this summary is qualified in
its entirety thereby. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
declaration of trust authorizes us to issue up to an aggregate of 300,000,000 shares of beneficial interest, all of which are currently designated as common shares of beneficial
interest, par value $.01 per share, or common shares. As of June&nbsp;25, 2015, we had 237,398,662 common shares issued and outstanding. As of the date of this prospectus, no other class or series
of shares of beneficial interest has been established and is outstanding. Our declaration of trust contains a provision permitting our Board of Trustees, without any action by our shareholders, to
amend our declaration of trust to increase or decrease the total number of shares of beneficial interest or the number of shares of any class or series that we have authority to issue. Our declaration
of trust further authorizes our Board of Trustees, subject to certain limitations, to reclassify any unissued shares from time to time by setting the preferences, conversion or other rights, voting
powers, restrictions, limitations as to distributions, qualifications or terms or conditions of redemption of our shares of beneficial interest or any new class or series of shares created by our
Board of Trustees. We believe that giving these powers to our Board of Trustees will provide us with increased flexibility in structuring possible future financings and acquisitions and in meeting
other business needs which might arise. Although our Board of Trustees has no intention at the present time of doing so, it could authorize us to issue a class or series of shares of beneficial
interest that could, depending upon the terms of the class or series, delay or prevent a change in control. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>17</FONT></P>

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Common Shares  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following is a summary of some general terms and provisions of our common shares. Because it is a summary, it does not contain all
of the information that may be important to you. If you want more information, you should read our declaration of trust and bylaws, copies of which have been filed with the SEC. See "Where You Can
Find More Information." This summary is also subject to and qualified by reference to the description of the particular terms of common shares described in the applicable prospectus supplement. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Except
as otherwise described in the applicable prospectus supplement, and subject to the preferential rights of any other class or series of shares then outstanding or which may be
issued, and to the ownership restrictions described below, all of our common shares are entitled:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> to receive distributions on our common shares if, as and when authorized by our Board of Trustees and declared by us out of assets
legally available for distribution; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> to share ratably in our assets legally available for distribution to our shareholders in the event of our liquidation, dissolution or
winding up after payment of or adequate provision for all of our known debts and liabilities. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Subject
to the provisions of our declaration of trust regarding the restriction on the transfer of shares of beneficial interest, each outstanding common share entitles the holder to one
vote on all matters submitted to a vote of shareholders, including the election of trustees. Holders of our common shares do not have cumulative voting rights in the election of trustees. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Holders
of our common shares have no preference, conversion, exchange, sinking fund, redemption or appraisal rights, or preemptive rights to subscribe for any of our securities. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;For
additional information about our common shares, including the potential effects that provisions in our declaration of trust and bylaws may have in delaying or preventing a change in
our control, see "Description of Certain Provisions of Maryland Law and of Our Declaration of Trust and Bylaws" below. </FONT></P>


<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>


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Preferred Shares  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following is a summary of the general terms and provisions of the preferred shares that we may offer by this prospectus. We may
issue preferred shares in one or more classes or series; each class or series of preferred shares will have its own rights and preferences. We will describe in a prospectus supplement (1)&nbsp;the
specific terms of the class or series of any preferred shares offered through that prospectus supplement and (2)&nbsp;any general terms outlined in this section that will not apply to such preferred
shares. Because this is a summary, it does not contain all of the information that may be important to you. If you want more information, you should read our declaration of trust, including any
applicable articles supplementary, and bylaws, copies of which have been filed with the SEC. See "Where You Can Find More Information." This summary is also subject to and qualified by reference to
the description of the particular terms of our securities described in the applicable prospectus supplement. The prospectus supplement may add to, update or change the terms of such securities from
those described below. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><I> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;General.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;Our declaration of trust authorizes our Board of Trustees to determine the preferences, conversion or other rights, voting
powers,
restrictions, limitations as to dividends or other distributions, qualifications and terms and conditions of redemption of any preferred shares. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
preferred shares will have the distribution, liquidation, redemption, voting and conversion rights described in this section unless we state otherwise in the applicable prospectus
supplement. The liquidation preference is not indicative of the price at which the preferred shares will actually trade on </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>18</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>or
after the date of issuance. You should read the prospectus supplement relating to the particular class or series of the preferred shares for specific terms,
including:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the distinctive designation of the applicable class or series of preferred shares and the number of shares that will constitute the
class or series; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the initial offering price of such preferred shares; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> relative ranking and preference of such preferred shares as to distribution rights and rights upon liquidation, dissolution or winding
up of our affairs; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the distribution rate or rates (or method of calculation) on that class or series, the distribution periods, the date(s) on which
distributions will be payable and whether the distributions will be cumulative, noncumulative or partially cumulative, and, if cumulative, the dates from which the distributions will start to
cumulate; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any redemption or sinking fund provisions of that class or series; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any voting rights; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any conversion or exchange provisions; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any other specific terms, preferences, rights, limitations or restrictions of such preferred shares; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any limitations on issuance of any class or series of preferred shares ranking senior to or on a parity with such preferred shares as
to distribution rights and rights upon liquidation, dissolution or winding up of our affairs; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any procedures for any auction and remarketing; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any listing of such preferred shares on any securities exchange; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any limitations on record or beneficial ownership and restrictions on transfer, including those as may be appropriate to preserve our
qualification for taxation as a REIT. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Holders
of our preferred shares have no preemptive rights to subscribe for any of our securities. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
will describe in the applicable prospectus supplement any material U.S. federal income tax considerations applicable to the preferred shares offered by such prospectus supplement. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
issuance of preferred shares, the issuance of rights to purchase preferred shares or the possibility of the issuance of preferred shares or such rights could have the effect of
delaying or preventing a change in our control. In addition, the rights of holders of common shares will be subject to, and may be adversely affected by, the rights of holders of any preferred shares
that we have issued or may issue in the future. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;For
additional information about our preferred shares, including the potential effects that provisions in our declaration of trust and bylaws may have in delaying or preventing a change
in our control, see "Description of Certain Provisions of Maryland Law and of Our Declaration of Trust and Bylaws" below. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;As
described under "Description of Depositary Shares," we may, at our option, elect to offer depositary shares evidenced by depositary receipts. If we elect to do this, each depositary
receipt will represent a fractional interest in a share of the particular class or series of the preferred shares issued and deposited with a depositary. The applicable prospectus supplement will
specify that fractional interest. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><I> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Rank.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;Unless our Board of Trustees otherwise determines and we so specify in the applicable prospectus supplement, we expect that the
preferred
shares will, with respect to distribution rights and rights upon liquidation, dissolution or winding up of our affairs, rank senior to all our common shares. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>19</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2><I> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Distributions.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;Holders of preferred shares of each class or series will be entitled to receive cash and/or share distributions at the
rates and on
the dates shown in the applicable prospectus supplement. We will pay each distribution to holders of record as they appear on our share transfer books on the record dates fixed by our Board of
Trustees. In the case of preferred shares represented by depositary receipts, the records of the depositary referred to under "Description of Depositary Shares" will determine the persons to whom
distributions are payable. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
will not authorize or pay any distributions on a class or series of preferred shares or set aside funds for the payment of distributions if restricted or prohibited by law, or if the
terms of any of our agreements, including agreements relating to our indebtedness or our other classes or series of preferred shares, prohibit that authorization, payment or setting aside of funds or
provide that the authorization, payment or setting aside of funds is a breach of or a default under that agreement. We are now, and may in the future become, a party to agreements which restrict or
prevent the payment of distributions on, or the purchase or redemption of, our shares of beneficial interest, including preferred shares. These restrictions may be indirect, such as covenants which
require us to maintain specified levels of net worth or assets. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Distributions
on any class or series of preferred shares may be cumulative, noncumulative or partially cumulative, as specified in the applicable prospectus supplement. Cumulative
distributions will be
cumulative from and after the date shown in the applicable prospectus supplement. If our Board of Trustees fails to authorize a distribution that is noncumulative, the holders of the applicable class
or series will have no right to receive, and we will have no obligation to pay, a distribution in respect of the applicable distribution period, whether or not distributions on that class or series
are declared payable in the future. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
refer to our common shares or other shares, now or hereafter issued, that rank junior to an applicable class or series of preferred shares with respect to distribution rights as
junior shares. To the extent that the applicable class or series is entitled to a cumulative distribution, we may not declare or pay any distributions, or set aside any funds for the payment of
distributions, on junior shares, or redeem or otherwise acquire junior shares, unless we also have declared and either paid or set aside for payment the full cumulative distributions on such class or
series of preferred shares and on all our other class or series of preferred shares ranking senior to or on a parity with such class or series of preferred shares for all past distribution periods.
The preceding sentence does not prohibit:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> distributions payable in junior shares or options, warrants or rights to subscribe for or purchase junior shares; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> conversions into or exchanges for junior shares; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> pro rata offers to purchase or a concurrent redemption of all, or a pro rata portion of, the outstanding preferred shares of such
class or series and any other class or series of shares ranking on a parity with such class or series of preferred shares with respect to distribution rights and rights upon our liquidation,
dissolution or winding up; or </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> our redemption, purchase or other acquisition of shares under incentive, benefit or share purchase plans for officers, trustees or
employees or others performing or providing similar services, for the purposes of enforcing restrictions upon ownership and transfer of our equity securities contained in our declaration of trust or
bylaws or our redemption or other acquisition of rights issued under any shareholder rights plan we may adopt. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;To
the extent an applicable class or series is noncumulative, we need only declare, and pay or set aside for payment, the distribution for the then current distribution period, before
making distributions on or acquiring junior shares. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>20</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unless
full cumulative distributions on a class or series of preferred shares have been or are contemporaneously declared and either paid or set aside for payment for all past
distribution periods, no distributions (other than in junior shares) may be declared or paid or set aside for payment on any other class or series of preferred shares ranking on a parity with such
class or series with respect to distribution rights. When distributions are not paid in full upon a class or series of preferred shares and any other class or series ranking on a parity with such
class or series with respect to distribution rights, all distributions declared upon such class or series and any class or series ranking on a parity with such class or series with respect to
distribution rights shall be allocated pro rata so that the amount of distributions declared per share on such class or series and such other shares shall in all cases bear to each other the same
ratio that the accrued distributions per share on such class or series and such other shares bear to each other. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unless
otherwise specified in the applicable prospectus supplement, we will credit any distribution payment made on an applicable class or series, including any capital gain
distribution, first against the earliest accrued but unpaid distribution due with respect to the class or series. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><I> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Redemption.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;We may have the right or may be required to redeem one or more class or series of preferred shares, as a whole or in part,
in each case
upon the terms, if any, and at the times and at the redemption prices shown in the applicable prospectus supplement. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
a class or series of preferred shares is subject to mandatory redemption, we will specify in the applicable prospectus supplement the number of shares we are required to redeem, when
those redemptions start, the redemption price and any other terms and conditions affecting the redemption. The redemption price will include all accrued and unpaid distributions, except in the case of
noncumulative preferred shares. The redemption price may be payable in cash or other property, as specified in the applicable prospectus supplement. If the redemption price for preferred shares of any
class or series is payable only from the net proceeds of our issuance of shares of beneficial interest, the terms of the preferred shares may provide that, if no shares of beneficial interest shall
have been issued or to the extent the net proceeds from any issuance are insufficient to pay in full the aggregate redemption price then due, the preferred shares will automatically and mandatorily be
converted into shares of beneficial interest pursuant to conversion provisions specified in the applicable prospectus supplement. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><I> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Liquidation Preference.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;The applicable prospectus supplement will specify the liquidation preference of the applicable class or series.
Upon our
voluntary or involuntary liquidation, dissolution or winding up of our affairs, before any distribution may be made to the holders of our common shares or any other shares of beneficial interest
ranking junior in the distribution of assets upon any liquidation, dissolution or winding up of our affairs, to the applicable class or series, the holders of that class or series will be entitled to
receive, out of our assets legally available for distribution to shareholders, liquidating distributions in the amount of the liquidation preference, plus an amount equal to all distributions accrued
and unpaid. In the case of a noncumulative applicable class or series, accrued and unpaid distributions include only the then current distribution period. Unless otherwise specified in the applicable
prospectus supplement, if liquidating distributions have been made in full to all holders of preferred shares, our remaining assets will be distributed among the holders of any other shares of
beneficial interest ranking junior to the preferred shares upon liquidation, according to their rights and preferences and in each case according to their number of shares. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If,
upon any voluntary or involuntary liquidation, dissolution or winding up of our affairs, our available assets are insufficient to pay the amount of the liquidating distributions on
all outstanding shares of that class or series and the corresponding amounts payable on all equally ranking shares of beneficial interest upon any liquidation, dissolution or winding up of our
affairs, then the holders of that class or series and all other equally ranking shares of beneficial interest shall share ratably in the distribution in proportion to the full liquidating
distributions to which they would otherwise be entitled. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>21</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unless
otherwise specified in the applicable prospectus supplement, after payment of the full amount of the liquidating distribution to which they are entitled, the holders of a class or
series of preferred shares will have no right or claim to any of our remaining assets. Neither the sale, lease, transfer or conveyance of all or substantially all of our property or business, nor the
merger or consolidation of us into or with any other entity or the merger or consolidation of any other entity into or with us or a statutory share exchange by us, shall be deemed to constitute the
dissolution, liquidation or winding up of our affairs. In determining whether a distribution (other than upon voluntary or involuntary dissolution), by dividend, redemption or other acquisition of
shares or otherwise, is permitted under Maryland law, amounts that would be needed, if we were to be dissolved at the time of the distribution, to satisfy the preferential rights upon dissolution of
the holders of a class or series of preferred shares will not be added to our total liabilities. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><I> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Voting Rights.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;Holders of our preferred shares will not have any voting rights, except as described below or as otherwise from time to
time specified
in the applicable prospectus supplement. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unless
otherwise specified in the applicable prospectus supplement, holders of our preferred shares (voting separately as a class with all other class or series of preferred shares with
similar voting rights) will be entitled to elect two additional trustees to our Board of Trustees at our next annual meeting of shareholders and at each subsequent annual meeting if at any time
distributions on the applicable class or series are in arrears for six consecutive quarterly periods. If the applicable class or series has a cumulative distribution, the right to elect additional
trustees described in the preceding sentence shall remain in effect until we declare and pay or set aside for payment all distributions accrued and unpaid on the applicable class or series. If the
applicable class or series does not have a cumulative distribution, the right to elect additional trustees described above shall remain in effect until we declare and pay or set aside for payment
distributions accrued and unpaid on four consecutive quarterly periods on the applicable class or series. In the event the preferred shareholders are so entitled to elect trustees, the entire Board of
Trustees will be increased by two trustees. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unless
otherwise provided for in an applicable class or series, so long as any preferred shares are outstanding, we may not, without the affirmative vote or consent of a majority of the
shares of each affected class or series of preferred shares outstanding at that time:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> authorize, create or increase the authorized or issued amount of any class or series of shares of beneficial interest ranking senior
to that class or series of preferred shares with respect to distribution and liquidation rights; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> reclassify any authorized shares of beneficial interest into a class or series of shares of beneficial interest ranking senior to that
class or series of preferred shares with respect to distribution and liquidation rights; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> create, authorize or issue any security or obligation convertible into or evidencing the right to purchase any shares of beneficial
interest ranking senior to that class or series of preferred shares with respect to distribution and liquidation rights; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> amend, alter or repeal the provisions of our declaration of trust or any articles supplementary relating to that class or series of
preferred shares, whether by merger, consolidation or otherwise, in a manner that materially and adversely affects the class or series of preferred shares. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>The
authorization, creation or increase of the authorized or issued amount of any class or series of shares of beneficial interest ranking on parity or junior to a class or series of preferred shares
with respect to distribution and liquidation rights will not be deemed to materially and adversely affect that class or series. Further, with respect to any merger, consolidation or similar event, so
long as a class or series of preferred shares remains outstanding with the terms thereof materially unchanged or the holders of shares of that class or series receive shares of the successor with
substantially identical rights, </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>22</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>taking
into account that, upon the occurrence of such event, we may not be the surviving entity, the occurrence of such event will not be deemed to materially and adversely affect that class or
series. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
foregoing voting provisions will not apply if all of the outstanding shares of the class or series of preferred shares with the right to vote have been redeemed or called for
redemption and sufficient funds have been deposited in trust for the redemption either at or prior to the act triggering these voting rights. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;As
more fully described under "Description of Depositary Shares" below, if we elect to issue depositary shares, each representing a fraction of a share of a class or series, each
depositary share will in effect be entitled to a fraction of a vote. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2><I> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Conversion and Exchange Rights.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;We will describe in the applicable prospectus supplement the terms and conditions, if any, upon which
you may, or we
may require you to, convert or exchange shares of any class or series of preferred shares into common shares or any other class or series of shares of beneficial interest or debt securities or other
property. The terms will include the number of common shares or other securities or property into which the preferred shares are convertible or exchangeable, the conversion or exchange price (or the
manner of determining it), the conversion or exchange period, provisions as to whether conversion or exchange will be at the option of the holders of the class or series or at our option, the events
requiring an adjustment of the conversion or exchange price and provisions affecting conversion or exchange upon the redemption of shares of the class or series. </FONT></P>

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Transfer Agent and Registrar  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The transfer agent and registrar for our common shares is Wells Fargo Bank, National Association. The transfer agent and registrar for
each class or series of preferred shares that may be issued and sold pursuant to this prospectus will be designated in the applicable prospectus supplement. </FONT></P>

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<BR></FONT><FONT SIZE=2><B>  DESCRIPTION OF DEPOSITARY SHARES    <BR>    </B></FONT></P>

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General  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;References in this "Description of Depositary Shares" section to "we," "us" or "our" mean Senior Housing Properties Trust and not any
of its consolidated subsidiaries, unless the context otherwise requires. The following is a summary of the general terms and provisions of the depositary shares that we may offer by this prospectus.
Because it is a summary, it does not contain all of the information that may be important to you. If you want more information, you should read the form of deposit agreement and depositary receipts,
which will be filed as exhibits to the registration statement of which this prospectus is a part prior to an offering of depositary shares. See "Where You Can Find More Information." This summary is
also subject to and qualified by reference to the descriptions of the particular terms of our securities described in the applicable prospectus supplement. We will describe in a prospectus supplement
(1)&nbsp;the specific terms of the depositary shares offered through that prospectus supplement and (2)&nbsp;any general terms outlined in this section that will not apply to such depositary
shares. The applicable prospectus supplement also may add to, update or change the terms of such securities may differ from those described below. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
may, at our option, elect to offer fractional interests in preferred shares, rather than whole preferred shares. If we exercise this option, we will appoint a depositary to issue
depositary receipts representing those fractional interests. Preferred shares of each series represented by depositary shares will be deposited under a separate deposit agreement between us and the
depositary. The prospectus supplement relating to a series of depositary shares will show the name and address of the depositary. Subject to the terms of the applicable deposit agreement, each owner
of depositary shares will be </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>23</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>entitled
to all of the distribution, voting, conversion, redemption, liquidation and other rights and preferences of the preferred shares represented by those depositary shares. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Depositary
receipts issued pursuant to the applicable deposit agreement will evidence ownership of depositary shares. Upon surrender of depositary receipts at the office of the
depositary, and upon payment of the charges provided in and subject to the terms of the deposit agreement, a holder of depositary shares will be entitled to receive the preferred shares underlying the
surrendered depositary receipts. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
will describe in the applicable prospectus supplement any material U.S. federal income tax considerations applicable to the depositary shares offered by such prospectus supplement. </FONT></P>

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Distributions  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The depositary will be required to distribute all cash distributions received in respect of the applicable preferred shares to the
record holders of depositary receipts evidencing the related depositary shares, in proportion to the number of depositary receipts owned by such holders on the relevant record date, which will be the
same date as the record date fixed by us for the distribution paid on the applicable preferred shares. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
the distribution is other than in cash, a depositary will be required to distribute property received by it to the record holders of depositary receipts entitled thereto, unless the
depositary determines that it is not feasible to make the distribution. In that case, the depositary may, with our approval, sell the property and distribute the net proceeds from the sale to the
holders. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Depositary
shares that represent preferred shares converted or exchanged will not be entitled to distributions. The deposit agreement will also contain provisions relating to the manner
in which any subscription or similar rights we offer to holders of the preferred shares will be made available to holders of depositary shares. All distributions will be subject to obligations of
holders to file proofs, certificates and other information and to pay certain charges and expenses to the depositary. </FONT></P>

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Withdrawal of Preferred Shares  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;You may receive the number of whole preferred shares and any money or other property represented by your depositary receipts after
surrendering the depositary receipts at the corporate trust office of the depositary. Partial preferred shares will not be issued. If the depositary shares that you surrender exceed the number of
depositary shares that represent the number of whole preferred shares you wish to withdraw, then the depositary will deliver to you at the same time a new depositary receipt evidencing the excess
number of depositary shares. Once you have withdrawn your preferred shares, you will not be entitled to re-deposit those preferred shares under the deposit agreement in order to receive depositary
shares. We do not expect that there will be any public trading market for withdrawn preferred shares. </FONT></P>

<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>



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Redemption of Depositary Shares  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If we redeem a series of the preferred shares underlying the depositary shares, the depositary will redeem those depositary shares from
the proceeds received by it. The depositary will mail notice of redemption not less than 30 and not more than 60&nbsp;days before the date fixed for redemption to the record holders of the
depositary receipts evidencing the depositary shares being redeemed at their addresses appearing in the depositary's books. The redemption price per depositary share will be equal to the applicable
fraction of the redemption price per share payable with respect to the series of the preferred shares. The redemption date for depositary shares will be the same as that of the preferred shares. If we
are redeeming less than all of the depositary shares, the depositary will select the depositary shares we are redeeming by lot or pro rata as the depositary may determine. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>24</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;After
the date fixed for redemption, the depositary shares called for redemption will no longer be deemed outstanding. All rights of the holders of the depositary shares and the related
depositary receipts will cease at that time, except the right to receive the money or other property to which the holders of depositary shares were entitled upon redemption. Receipt of the money or
other property is subject to surrender to the depositary of the depositary receipts evidencing the redeemed depositary shares. </FONT></P>

<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>


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Voting of the Preferred Shares  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Upon receipt of notice of any meeting at which the holders of the applicable preferred shares are entitled to vote, a depositary will
be required to mail the information contained in the notice of meeting to the record holders of the applicable depositary receipts. Each record holder of depositary receipts on the record date, which
will be the same date as the record date for voting preferred shares, will be entitled to instruct the depositary as to the exercise of the voting rights pertaining to the amount of preferred shares
represented by the holder's depositary shares. If you do not instruct the depositary how to vote your shares, the depositary will abstain from voting those shares. The depositary will not be
responsible for any failure to carry out an instruction to vote or for the effect of any such vote made so long as the action or inaction of the depositary is in good faith and is not the result of
the depositary's gross negligence or willful misconduct. </FONT></P>


<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>


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Liquidation Preference  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Upon our liquidation, whether voluntary or involuntary, each holder of depositary shares will be entitled to the fraction of the
liquidation preference accorded each preferred share represented by the depositary shares, as described in the applicable prospectus supplement. </FONT></P>

<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>


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Conversion or Exchange of Preferred Shares  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The depositary shares will not themselves be convertible into or exchangeable for common shares, preferred shares or any of our other
securities or property. Nevertheless, if so specified in the applicable prospectus supplement, the depositary receipts may be surrendered by holders to the applicable depositary with written
instructions to it to instruct us to cause conversion or exchange of the preferred shares represented by the depositary shares. Similarly, if so specified in the applicable prospectus supplement, we
may require you to surrender all of your depositary receipts to the applicable depositary upon our requiring the conversion or exchange of the preferred shares represented by the depositary shares. We
will agree that, upon receipt of the instruction and any amounts payable in connection with the conversion or exchange, we will cause the conversion or exchange using the same procedures as those
provided for delivery of preferred shares to effect the conversion or exchange. If you are converting or exchanging only a part of the depositary shares, the depositary will issue you a new depositary
receipt for any unconverted or unexchanged depositary shares. </FONT></P>

<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>


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Amendment and Termination of a Deposit Agreement  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We and the applicable depositary are permitted to amend the provisions of the depositary receipts and the deposit agreement. However,
the holders of a majority of the applicable depositary shares then outstanding must approve any amendment that adds or increases fees or charges or prejudices an important right of holders. Every
holder of an outstanding depositary receipt at the time any amendment becomes effective, by continuing to hold the receipt, will be bound by the applicable deposit agreement, as amended. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Any
deposit agreement may be terminated by us upon not less than 30&nbsp;days' prior written notice to the applicable depositary if (1)&nbsp;the termination is necessary to preserve
our qualification for taxation as </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>25</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>a
REIT or (2)&nbsp;a majority of each series of preferred shares affected by the termination consents to the termination. When either event occurs, the depositary will be required to deliver or make
available to each holder of depositary receipts, upon surrender of the depositary receipts held by the holder, the number of whole or fractional preferred shares as are represented by the depositary
shares evidenced by the depositary receipts, together with any other property held by the depositary with respect to the depositary receipts. In addition, a deposit agreement will automatically
terminate if:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> all depositary shares have been redeemed; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> there shall have been a final distribution in respect of the related preferred shares in connection with our liquidation and the
distribution has been made to the holders of depositary receipts evidencing the depositary shares underlying the preferred shares; or </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> each related preferred share shall have been converted or exchanged into securities not represented by depositary shares. </FONT></DD></DL>
</UL>

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Charges of a Depositary  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We will pay all transfer and other taxes and governmental charges arising solely from the existence of a deposit agreement. In
addition, we will pay the fees and expenses of a depositary in connection with the initial deposit of the preferred shares and any redemption of preferred shares. However, holders of depositary
receipts will pay any transfer or other governmental charges and the fees and expenses of a depositary for any duties the holders request to be performed that are outside of those expressly provided
for in the applicable deposit agreement. </FONT></P>

<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>



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Resignation and Removal of Depositary  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A depositary may resign at any time by delivering to us notice of its election to do so. In addition, we may at any time remove a
depositary. Any resignation or removal will take effect when we appoint a successor depositary and it accepts the appointment. We must appoint a successor depositary within 60&nbsp;days after
delivery of the notice of resignation or removal. A depositary must be a bank or trust company having its principal office in the United States that has a combined capital and surplus of at least
$50&nbsp;million. </FONT></P>


<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>


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Miscellaneous  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The depositary will be required to forward to holders of depositary receipts any reports and communications from us that it receives
with respect to the related preferred shares. Holders of depository receipts will be able to inspect the transfer books of the depository and the list of holders of depositary receipts upon reasonable
notice. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Neither
we nor the depositary will be liable if the depositary is prevented from or delayed in performing its obligations under a deposit agreement by law or any circumstances beyond its
control. Our obligations and those of the depositary under a deposit agreement will be limited to performing duties in good faith and without gross negligence or willful misconduct. Neither we nor the
depositary will be obligated to prosecute or defend any legal proceeding in respect of any depositary receipts, depositary shares or related preferred shares unless satisfactory indemnity is
furnished. We and the depositary will be permitted to rely on written advice of counsel or accountants, on information provided by persons presenting preferred shares for deposit, by holders of
depositary receipts, or by other persons believed in good faith to be competent to give the information, and on documents believed in good faith to be genuine and signed by a proper party. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
the depositary receives conflicting claims, requests or instructions from any holders of depositary receipts, on the one hand, and us, on the other hand, the depositary shall be
entitled to act on the claims, requests or instructions received from us. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>26</FONT></P>

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 </FONT></P>

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<P style="font-family:times;"><FONT SIZE=2><A HREF="#bg15401a_main_toc">Table of Contents</A> </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="di15401_description_of_warrants"> </A>
<A NAME="toc_di15401_1"> </A>
<BR></FONT><FONT SIZE=2><B>  DESCRIPTION OF WARRANTS    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;References in this "Description of Warrants" section to "we," "us" or "our" mean Senior Housing Properties Trust and not any of its
consolidated subsidiaries, unless the context otherwise requires. The following is a summary of the general terms and provisions of the warrants that we may offer by this prospectus. Because it is a
summary, it does not contain all of the information that may be important to you. If you want more information, you should read the forms of warrants and the warrant agreement which will be filed as
exhibits to the registration statement of which this prospectus is a part. See "Where You Can Find More Information." This summary is also subject to and qualified by reference to the descriptions of
the particular terms of our securities described in the applicable prospectus supplement. We will describe in a prospectus supplement (1)&nbsp;the specific terms of the warrants offered through that
prospectus supplement and (2)&nbsp;any general terms outlined in this section that will not apply to such warrants. The applicable prospectus supplement also may add to, update or change the terms
of such securities from those described below. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
may issue, together with any other securities being offered or separately, warrants entitling the holder to purchase from or sell to us, or to receive from us the cash value of the
right to purchase or sell, debt securities, preferred shares, depositary shares or common shares. We and a warrant agent will enter a warrant agreement pursuant to which the warrants will be issued.
The warrant agent will act
solely as our agent in connection with the warrants and will not assume any obligation or relationship of agency or trust for or with any holders or beneficial owners of warrants. We will
file&nbsp;a copy of the forms of warrants and the warrant agreement with the SEC at or before the time of the offering of the applicable series of warrants. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
the case of each series of warrants, the applicable prospectus supplement will describe the terms of the warrants being offered thereby. These include the following, if
applicable:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the offering price; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the currencies in which such warrants are being offered; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the number of warrants offered; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the securities underlying the warrants; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the exercise price, the procedures for exercise of the warrants and the circumstances, if any, that will cause the warrants to be
automatically exercised; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the date on which the warrants will expire; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the rights, if any, we have to redeem the warrants; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the name of the warrant agent; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the other terms of the warrants. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
will describe in the applicable prospectus supplement any material U.S. federal income tax considerations applicable to the warrants offered by such prospectus supplement. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Warrants
may be exercised at the appropriate office of the warrant agent or any other office indicated in the applicable prospectus supplement. Before the exercise of warrants, holders
will not have any of the rights of holders of the securities purchasable upon exercise and will not be entitled to payments made to holders of those securities. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
warrant agreement may be amended or supplemented without the consent of the holders of the warrants to which the amendment or supplement applies to effect changes that are not
inconsistent with the provisions of the warrants and that do not adversely affect the interests of the holders of the warrants. However, any amendment that materially and adversely alters the rights
of the holders of </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>27</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>warrants
will not be effective unless the holders of a majority of the applicable warrants then outstanding approve the amendment. Every holder of an outstanding warrant at the time any amendment
becomes effective, by continuing to hold the warrant, will be bound by the applicable warrant agreement as amended thereby. The prospectus supplement applicable to a particular series of warrants may
provide that certain provisions of the warrants, including the securities for which they may be exercisable, the exercise price and the expiration date may not be altered without the consent of the
holder of each warrant. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="di15401_description_of_certain_provisi__des03778"> </A>
<A NAME="toc_di15401_2"> </A>
<BR></FONT><FONT SIZE=2><B>  DESCRIPTION OF CERTAIN PROVISIONS OF MARYLAND LAW<BR>  AND OF OUR DECLARATION OF TRUST AND BYLAWS    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We are organized as a REIT under Maryland law. The following is a summary of our declaration of trust and bylaws and several provisions
of Maryland law. Because it is a summary, it does not contain all the information that may be important to you. If you want more information, you should read our entire declaration of trust and
bylaws, copies of which we have filed with the SEC, and the provisions of Maryland law. </FONT></P>

<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>


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Trustees  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our declaration of trust and bylaws provide for a Board of Trustees of five members and that our Board of Trustees may change the
number of trustees, but there may be not less than three nor more than seven. In case of failure to elect trustees at an annual meeting of shareholders, the incumbent trustees will hold over and
continue to direct the management of our business and affairs until they resign or their successors are elected and qualify. Any vacancy on the Board of Trustees may be filled only by a majority of
the remaining trustees, even if the remaining trustees do not constitute a quorum. Any trustee elected to fill a vacancy will hold office for the remainder of the full term of the class of trustees in
which the vacancy occurred or was created and until a successor is elected and qualifies. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;There
is no cumulative voting in the election of trustees. Except as may be mandated by any applicable law or the listing requirements of the principal exchange on which our common
shares are listed, and subject to the voting rights of any class or series of our shares which may be hereafter created, (1)&nbsp;a plurality of all the votes cast at a meeting of our shareholders
duly called and at which a quorum is present shall be sufficient to elect a trustee in an uncontested election of trustees and (2)&nbsp;a majority of all the shares entitled to vote at a meeting of
our shareholders duly called and at which a quorum is present shall be sufficient to elect a trustee in a contested election (which is an election at which the number of nominees exceeds the number of
trustees to be elected at such meeting). Under our Governance Guidelines, if an incumbent trustee does not receive a majority of the votes cast in an uncontested election, the trustee will submit an
offer to resign from the Board of Trustees. In such circumstance, the Nominating and Governance Committee of our Board of Trustees will make a recommendation to the Board on whether to accept or
reject the resignation, or whether other action should be taken. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
declaration of trust previously divided our Board of Trustees into three classes, with shareholders electing the trustees of each class for three year terms and only one class of
trustees being elected each year. Pursuant to an amendment to our declaration of trust approved at our 2014 annual meeting of
shareholders, effective at our 2015 annual meeting of shareholders, trustees of the class of trustees whose term expired at that meeting or that expires at a subsequent annual meeting of shareholders
are elected annually, with all of our trustees being elected annually as of our 2017 annual meeting of shareholders. The classified board provision, to the extent it is in effect, could have the
effect of making the replacement of our incumbent trustees more time consuming and difficult. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Under
our bylaws, our trustees are qualified as "independent trustees" or "managing trustees," and our bylaws require that (except for temporary periods due to vacancies), a majority of
the trustees </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>28</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>holding
office will at all times be independent trustees. For those purposes, an "independent trustee" is not involved in our day to day activities, is not an employee of our manager, RMR&nbsp;LLC,
and qualifies as independent under our declaration of trust, if applicable, and applicable rules of the NYSE and the SEC. A "managing trustee" is a trustee who is not an independent trustee and who
has been an employee of RMR&nbsp;LLC or has been involved in our day to day activities for at least one year prior to his or her election. Our Board of Trustees is currently composed of three
independent trustees and two managing trustees. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
declaration of trust and bylaws provide that a trustee may be removed with or without cause by the affirmative vote of the holders of not less than two-thirds of our common shares
entitled to vote in the election of trustees. This provision precludes shareholders from removing our incumbent trustees unless they can obtain the requisite affirmative vote of shares. Under our
bylaws, a trustee may also be removed with or without cause by the affirmative vote of all the remaining trustees. </FONT></P>

<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>


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Advance Notice of Trustee Nominations and New Business  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2><I> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Annual Meetings of Shareholders.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;Our bylaws provide that nominations of individuals for election to our Board of Trustees and proposals
of other
business to be considered at an annual meeting of shareholders may be made only in our notice of the meeting, by or at the direction of our Board of Trustees, or by a shareholder who is entitled to
vote at the meeting, is entitled to make nominations or proposals and has complied with the advance notice procedures set forth in our bylaws. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Under
our bylaws, a shareholder's written notice of nominations for trustee or other matters to be considered at an annual meeting of shareholders must be delivered to our Secretary at
our principal executive offices not later than 5:00&nbsp;p.m. (Eastern Time) on the 120th&nbsp;day nor earlier than the 150th&nbsp;day prior to the first anniversary of the date of our proxy
statement for the preceding year's annual meeting; provided however, that in the event that the annual meeting is called for a date that is more than 30&nbsp;days earlier or later than the first
anniversary of the date of the preceding year's annual meeting, the notice must be delivered by not later than 5:00&nbsp;p.m. (Eastern Time) on the 10th&nbsp;day following the earlier of the day
on which (1)&nbsp;notice of the date of the annual meeting is mailed or otherwise made available or (2)&nbsp;public announcement of the date of the annual meeting is first made by us. Neither the
postponement or adjournment of an annual meeting, nor the public announcement of such postponement or adjournment, commences a new time period for the giving of a shareholder's notice. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
bylaws set forth procedures for submission of nominations for trustee elections and other proposals by our shareholders for consideration at an annual meeting of shareholders,
including, among other things:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> requiring that a shareholder wishing to make a nomination or proposal of other business be a shareholder of record of at least $2,000
in market value, or 1% of our shares, entitled to propose such business and to vote at the meeting on such proposal for at least one year immediately preceding such shareholder's submission of a
notice of the proposal, that the shareholder continue to be such a shareholder at the time of submitting its notice of such proposal through and including the time of the annual meeting (including any
adjournment or postponement thereof), that the shareholder hold a certificate for such shares at the time of submitting a notice through and including the time of the annual meeting (including any
adjournment or postponement thereof), and that the shareholder submit the proposal to our Secretary in accordance with the requirements of our bylaws; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> providing that the advance notice provisions in our bylaws are the exclusive means for a shareholder to make nominations or propose
business for consideration at an annual meeting of shareholders, except to the extent of matters which are required to be presented to our </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>29</FONT></P>

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<UL>
<UL>

<P style="font-family:times;"><FONT SIZE=2>shareholders
by applicable law and which have been properly presented in accordance with the requirements of such law; </FONT></P>

</UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> requiring certain information to be provided regarding any proposed nominee by the proposing shareholder; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> requiring certain information to be provided with respect to any business other than the election of trustees that a shareholder
proposes to bring before a meeting of our shareholders; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> requiring certain information to be provided as to the shareholder giving the notice and certain of its affiliates; and </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> providing that the proposing shareholder is responsible for ensuring compliance with the advance notice provisions, that any responses
of the shareholder to any request for information will not cure any defect in the shareholder's notice and that neither we, our Board of Trustees or any committee of our Board of Trustees nor any of
our officers has any duty to request clarification or update information or inform the proposing shareholder of any defect in the shareholder's notice. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2><I> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Special Meetings of Shareholders.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;With respect to special meetings of shareholders, our bylaws provide that only business brought
before the meeting
pursuant to our notice of the meeting may be conducted at such meeting. Nominations of individuals for election to our Board of Trustees may be made at a special meeting of shareholders at which
trustees are to be elected pursuant to our notice of meeting,
by or at the direction of our Board of Trustees, or, provided that our Board of Trustees has determined that trustees will be elected at such special meeting, by a shareholder who is entitled to vote
at the meeting and has complied with the advance notice procedures set forth in our bylaws. Under our bylaws, in the event we call a special meeting of shareholders for the purpose of electing one or
more trustees, a shareholder may nominate an individual or individuals (as the case may be) for election as a trustee if the shareholder provides timely notice, in writing, to our Secretary at our
principal executive offices, containing the information and following the procedures required by the advance notice provisions in our bylaws, as described above for submitting nominations for
consideration at an annual meeting of shareholders. To be timely, a shareholder's notice must be delivered not earlier than the 150th&nbsp;day prior to such special meeting and not later than
5:00&nbsp;p.m. (Eastern Time) on the later of (1)&nbsp;the 120th&nbsp;day prior to such special meeting or (2)&nbsp;the 10th&nbsp;day following the day on which public announcement is first
made of the date of the special meeting and of any nominee proposed by the trustees to be elected at such meeting. Neither the postponement or adjournment of a special meeting, nor the public
announcement of such postponement or adjournment, shall commence a new time period for the giving of a shareholder's notice. </FONT></P>

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Meetings of Shareholders; Actions by Written Consent  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Meetings of shareholders may be called only by our Board of Trustees. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Whenever
shareholders are required or permitted to take any action by a vote, the action may only be taken by a vote at a shareholders meeting. Under our bylaws, shareholders do not have
the right to take any action by written consent instead of a vote at a shareholders meeting. </FONT></P>

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Liability and Indemnification of Trustees and Officers  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The laws relating to Maryland real estate investment trusts, or the Maryland REIT Law, permit a REIT formed under Maryland law to
include in its declaration of trust a provision limiting the liability of its trustees and officers to the trust and its shareholders for money damages except for liability resulting from
(1)&nbsp;actual receipt of an improper benefit or profit in money, property or services or (2)&nbsp;active and deliberate dishonesty by the trustee or officer that was established by a final
judgment as </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>30</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>being
material to the cause of action adjudicated. Our declaration of trust contains such a provision which eliminates such liability to the maximum extent permitted by Maryland law. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Maryland REIT Law permits a REIT formed under Maryland law to indemnify and advance expenses to its trustees, officers, employees and agents to the same extent permitted by the
Maryland General Corporation Law, or the MGCL, for directors and officers of Maryland corporations. The MGCL permits a corporation to indemnify its present and former directors and officers, among
others, against judgments, penalties, fines, settlements and reasonable expenses actually incurred by them in connection with any proceeding to which they may be made, or are threatened to be made, a
party by reason of their service in those capacities. However, a Maryland corporation is not permitted to provide this type of indemnification if the following is
established:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the act or omission of the director or officer was material to the matter giving rise to the proceeding and (1)&nbsp;was committed
in bad faith or (2)&nbsp;was the result of active and deliberate dishonesty; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the director or officer actually received an improper personal benefit in money, property or services; or </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> in the case of any criminal proceeding, the director or officer had reasonable cause to believe that the act or omission was unlawful. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Under
the MGCL, a Maryland corporation may not indemnify a director for an adverse judgment in a suit by or in the right of the corporation or for a judgment of liability on the basis
that personal benefit was improperly received, unless in either case a court orders indemnification and then only for expenses. The MGCL permits a corporation to advance reasonable expenses to a
director or officer upon the corporation's receipt of the following:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> a written affirmation by the director or officer of his or her good faith belief that the director or officer has met the standard of
conduct necessary for indemnification by the corporation; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> a written undertaking by the director or officer or on his or her behalf to repay the amount paid or reimbursed by the corporation if
it is ultimately determined that this standard of conduct was not met. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
declaration of trust requires us, to the maximum extent permitted by Maryland law, to indemnify (1)&nbsp;any present or former trustee or officer of our company or (2)&nbsp;any
individual who, while a trustee or officer of our company, at our request, serves or has served as a trustee, director, officer, partner employee or agent of another REIT, corporation, partnership,
joint venture, trust, employee benefit plan or other enterprise and who is made or threatened to be made a party to a proceeding by reason of his or her service in that capacity and to pay or
reimburse their reasonable expenses in advance of final disposition of the proceeding. Our declaration of trust also permits us to indemnify and advance expenses to any person who served any
predecessor of ours in the capacities described above and any present or former shareholder, employee or agent of us or any such predecessor. Our declaration of trust also obligates us to pay or
reimburse the people described above for reasonable expenses in advance of final disposition of a proceeding. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
have also entered into indemnification agreements with our trustees and our officers providing for contractual indemnification and procedures for indemnification by us to the fullest
extent permitted by law and advancements by us of certain expenses and costs relating to claims, suits or proceedings arising from their service to us. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
SEC has expressed the opinion that indemnification of trustees, officers or persons otherwise controlling a company for liabilities arising under the Securities Act is against public
policy and is therefore unenforceable. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>31</FONT></P>

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Shareholder Liability  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Under the Maryland REIT Law, a shareholder is generally not personally liable for the obligations of a REIT formed under Maryland law
solely as a result of his or her status as a shareholder. Our declaration of trust provides that no shareholder will be liable for any debt, claim, demand, judgment or obligation of any kind by reason
of being a shareholder. While we intend to conduct our business in a manner designed to minimize potential shareholder liability, we can give no assurance that you can avoid liability in all instances
in all jurisdictions. We have not provided in the past and do not intend to provide insurance covering these risks to our shareholders. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
declaration of trust and bylaws provide that, to the fullest extent permitted by law, any shareholder who violates the declaration of trust or bylaws will indemnify us and hold us
harmless from and against all costs, expenses, penalties, fines and other amounts, including attorneys' and other professional fees, arising from the shareholder's violation, together with interest on
such amounts. Our bylaws further provide that matters for which a shareholder is liable and obligated to indemnify and hold us harmless include any breach or failure to fully comply with any covenant,
condition or provision of our declaration of trust or bylaws, including the advance notice provisions pertaining to shareholder
nominations and other proposals, and these provisions of our declaration of trust and bylaws apply to derivative actions brought against us in which the shareholder is not the prevailing party. </FONT></P>

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Disputes by Shareholders  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our bylaws provide that actions brought against us or any trustee, officer, manager (including RMR&nbsp;LLC or its successor), agent
or employee of us, by a shareholder, including derivative and class actions, shall, on the demand of any party to such dispute, be resolved through binding arbitration in accordance with the
procedures set forth in our bylaws. </FONT></P>

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Transactions with Affiliates  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our declaration of trust allows us to enter into contracts and transactions of any kind with any person, including any of our trustees,
officers, employees or agents or any person affiliated with them. Other than general legal principles applicable to self-dealing by trustees and interested trustee transactions, there are no
prohibitions in our declaration of trust or bylaws which would prohibit dealings between us and our affiliates. </FONT></P>

<P style="font-family:times;;margin-left:10.0pt;text-indent:-10.0pt;"><FONT SIZE=2><B>


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Restrictions on Transfer of Shares  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our declaration of trust provides that no person may own, or be deemed to own by virtue of the attribution provisions of the Code, more
than 9.8% of the number or value of our outstanding shares or 9.8% in number or value, whichever is more restrictive, of our outstanding common shares. Our declaration of trust also prohibits any
person from beneficially or constructively owning shares if that ownership would result in us being closely held under Section&nbsp;856(h) of the Code or would otherwise cause us to fail to qualify
for taxation as a REIT. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
Board of Trustees, in its discretion, may exempt a proposed transferee from the share ownership limitation if (1)&nbsp;it obtains such representations and undertakings from the
person who makes a request therefor, as are reasonably necessary to ascertain that no individual's ownership of shares would result in our being closely held under Section&nbsp;856(h) of the Code or
our otherwise failing to qualify for
taxation as a REIT; (2)&nbsp;such person does not and represents that it will not own, actually or constructively, an interest in one of our tenants (or a tenant of any entity which we own or
control) that would cause us to own, actually or constructively, more than a 9.9% interest in the tenant; and (3)&nbsp;such person agrees that any violation or attempted violation of such
representations or undertakings (or other action which is contrary to the restrictions contained in our declaration of trust) will result in such shares being automatically transferred to a charitable
trust in accordance with our declaration of </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>32</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>trust.
In connection with any requested exemption, our Board of Trustees may require such rulings from the IRS or opinions of counsel as it deems advisable in order to determine or ensure our
qualification for taxation as a REIT and such representations, undertakings and agreements it deems advisable in order for it to make the foregoing determinations. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
determining whether to grant an exemption, our Board of Trustees may consider, among other factors, the following:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the general reputation and moral character of the person requesting an exemption; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> whether the person's ownership of shares would be direct or through ownership attribution; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> whether the person's ownership of shares would adversely affect our ability to acquire additional properties or engage in other
business; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> whether granting an exemption would adversely affect any of our existing contractual arrangements. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
a person attempts a transfer of our shares in violation of the ownership limitations described above, then the number of shares which would cause the violation will (a)&nbsp;be
automatically transferred to a charitable trust for the exclusive benefit of one or more charitable beneficiaries designated by us or (b)&nbsp;if such transfer is not effective to prevent the
violation of the ownership limitations, be void ab initio. A transfer to the charitable trust will be deemed to be effective as of the close of business on the business day prior to the purported
transfer or other event that results in the transfer to the charitable trust. The prohibited owner will not acquire any rights in these excess shares, will not benefit economically from ownership of
any excess shares, will have no rights to distributions and will not possess any rights to vote. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Shares
of beneficial interest held in the trust shall be issued and outstanding shares of beneficial interest. The trustee of the charitable trust shall have all voting rights and rights
to distributions with respect to shares of beneficial interest held in the charitable trust, which rights shall be exercised for the exclusive benefit of the charitable beneficiary. Any distribution
paid prior to the discovery by us that shares of beneficial interest have been transferred to the trustee shall be paid by the recipient of such distribution to the trustee upon demand, and any
distribution authorized but unpaid shall be paid when due to the trustee. Any distribution so paid to the trustee shall be held in trust for the charitable beneficiary. The proposed transferee shall
have no voting rights with respect to shares of beneficial interest held in the trust and, subject to Maryland law, the trustee of the charitable trust will have the authority to rescind as void any
vote cast by the proposed transferee prior to our discovery that the shares have been transferred to the trust and to recast the vote in accordance with the desires of the trustee acting for the
benefit of the charitable beneficiary. However, if we have already taken irreversible trust action, then the trustee will not have the authority to rescind and recast the vote. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Within
20&nbsp;days after receiving notice from us that our shares have been transferred to a charitable trust, the trustee will sell the shares held in the charitable trust to a
person designated by the trustee whose ownership of the shares will not violate the ownership limitations set forth in our declaration of trust. Upon this sale, the interest of the charitable
beneficiary in the shares sold will terminate and the trustee will distribute the net proceeds of the sale to the prohibited owner and to the charitable beneficiary as
follows:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the prohibited owner will receive the lesser of:
<BR><BR></FONT>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>(1)</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the
price paid by the prohibited owner for the shares or, if the prohibited owner did not give value for the shares in connection with the event causing the
shares to be held in the charitable trust, for example, a gift, devise or other similar transaction, the market price (as defined in our declaration of trust) of the shares on the day of the event
causing the shares to be transferred to the charitable trust; and </FONT></DD></DL>
</DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>33</FONT></P>

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<UL>
<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>(2)</FONT></DT><DD style="font-family:times;"><FONT SIZE=2>the
price per share received by the trustee from the sale of the shares held in the charitable trust. </FONT></DD></DL>
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</UL>
<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any net sale proceeds in excess of the amount payable to the prohibited owner shall be paid immediately to the charitable beneficiary. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If,
prior to our discovery that shares have been transferred to the charitable trust, a prohibited owner sells those shares, then:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> those shares will be deemed to have been sold on behalf of the charitable trust; and </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> to the extent that the prohibited owner received an amount for those shares that exceeds the amount that the prohibited owner was
entitled to receive from a sale by a trustee, the prohibited owner must pay the excess to the trustee upon demand. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Also,
shares held in the charitable trust will be offered for sale to us, or our designee, at a price per share equal to the lesser of:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the price per share in the transaction that resulted in the transfer to the charitable trust or, in the case of a devise or gift, the
market price at the time of the devise or gift; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the market price on the date we or our designee accepts the offer. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
will have the right to accept the offer until the trustee has sold the shares held in the charitable trust. The net proceeds of the sale to us will be distributed to the prohibited
owner. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Any
person who acquires or attempts or intends to acquire beneficial or constructive ownership of any shares that will or may violate the foregoing share ownership limitations, or any
person who would have owned shares that resulted in a transfer to a charitable trust, is required to immediately give written notice to us of such event, or in the case of such a proposed or attempted
transaction, give at least 15&nbsp;days' prior written notice, and to provide to us such other information as we may request. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Every
owner of more than 5% of our shares is required to give written notice to us within 30&nbsp;days after the end of each taxable year stating the name and address of the owner, the
number of our shares which the owner beneficially owns and a description of the manner in which those shares are held. If the Code or applicable tax regulations specify a threshold below 5%, this
notice provision will apply to those persons who own our shares of beneficial interest at the lower percentage. In addition, each shareholder is required to provide us upon demand with any additional
information that we may request in order to determine our qualification for taxation as a REIT, to ensure compliance with the foregoing share ownership limitations and determine our compliance with
the requirements of any taxing authority or government. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
restrictions in our declaration of trust described above will not preclude the settlement of any transaction entered into through the facilities of any national securities exchange
or automated interdealer quotation system. Our declaration of trust provides, however, that the fact that the settlement of any transaction occurs will not negate the effect of any of the foregoing
limitations and any transferee in this kind of transaction will be subject to all of the provisions and limitations described above. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All
certificates evidencing our shares and any share statements for our uncertificated shares may bear legends referring to the foregoing restrictions. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
restrictions on transfer in our governing documents are intended to assist with REIT compliance under the Code and otherwise to promote our orderly governance. These restrictions do
not apply to RMR&nbsp;LLC or its affiliates. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>34</FONT></P>

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Regulatory Compliance and Disclosure  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our bylaws provide that any shareholder who, by virtue of such shareholder's ownership of our shares of beneficial interest or actions
taken by the shareholder affecting us, triggers the application of any requirement or regulation of any federal, state, municipal or other governmental or regulatory body on us or any of our
subsidiaries shall promptly take all actions necessary and fully cooperate with us to ensure that such requirements or regulations are satisfied without restricting, imposing additional obligations on
or in any way limiting the business, assets, operations or prospects of us or any of our subsidiaries. If the shareholder fails or is otherwise unable to promptly take such actions so as to cause
satisfaction of such requirements or regulations, such shareholder shall promptly divest a sufficient number of our shares necessary to cause the application of such requirement or regulation to not
apply to us or any of our subsidiaries. If the shareholder fails to cause such satisfaction or divest itself of such sufficient number of our shares by not later than the 10th&nbsp;day after
triggering such requirement or regulation referred to in the bylaws, then any of our shares beneficially owned by such shareholder at and in excess of the level triggering the application of such
requirement or regulation shall, to the fullest extent permitted by law, be deemed to constitute shares held in violation of the ownership limitations set forth in the declaration of trust. Also, our
bylaws provide that if the shareholder who triggers the application of any regulation or requirement fails to satisfy the requirements or regulations or to take curative actions within such
10&nbsp;day period, we may take all other actions which the Board of Trustees deems appropriate to require compliance or to preserve the value of our assets, and we may charge the offending
shareholder for our costs and expenses as well as any damages which may result. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
bylaws also provide that if a shareholder, by virtue of such shareholder's ownership of our shares of beneficial interest or its receipt or exercise of proxies to vote shares owned
by other shareholders, would not be permitted to vote such shareholder's shares or proxies for such shares in excess of a certain amount pursuant to applicable law but the Board of Trustees determines
that the excess shares or shares represented by the excess proxies are necessary to obtain a quorum, then such shareholder shall not be entitled to vote any such excess shares or proxies, and instead
such excess shares or proxies may, to the fullest extent permitted by law, be voted by the Advisor (as defined in our declaration of trust) or another person designated by the Board of Trustees, in
proportion to the total shares otherwise voted on such matter. </FONT></P>

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Business Combinations  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The MGCL contains a provision which regulates business combinations with interested shareholders. This provision applies to REITs
formed under Maryland law like us. Under the MGCL, business combinations such as mergers, consolidations, share exchanges, or, in circumstances specified in the statute, an asset transfer or issuance
or reclassification of equity securities between a REIT formed under Maryland law and an interested shareholder or an affiliate of an interested shareholder are prohibited for five years after the
most recent date on which the interested shareholder becomes an interested shareholder. Under the MGCL the following persons are deemed to be interested
shareholders:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> any person who beneficially owns, directly or indirectly, 10% or more of the voting power of the trust's outstanding voting shares; or </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> an affiliate or associate of the trust who, at any time within the two-year period immediately prior to the date in question, was the
beneficial owner, directly or indirectly, of 10% or more of the voting power of the then outstanding voting shares of the trust. </FONT></DD></DL>
</UL>
<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>35</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;After
the five year prohibition period has ended, a business combination between a trust and an interested shareholder generally must be recommended by the board of trustees of the trust
and must receive the following shareholder approvals:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the affirmative vote of at least 80% of the votes entitled to be cast by holders of outstanding voting shares of the trust; and </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the affirmative vote of at least two-thirds of the votes entitled to be cast by holders of voting shares other than shares held by the
interested shareholder with whom or with whose affiliate or associate the business combination is to be effected or held by an affiliate or associate of the interested shareholder. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
shareholder approvals discussed above are not required if the trust's shareholders receive the minimum price set forth in the MGCL for their shares and the consideration is received
in cash or in the same form as previously paid by the interested shareholder for its shares. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
foregoing provisions of the MGCL do not apply, however, to business combinations that are approved or exempted by our Board of Trustees prior to the time that the interested
shareholder becomes an interested shareholder. A person is not an interested shareholder under the statute if the board of trustees approves in advance the transaction by which that shareholder
otherwise would have become an interested shareholder. Our Board of Trustees has adopted a resolution that any business combination between us and any other person is exempted from the provisions of
the MGCL described in the preceding paragraphs, provided that the business combination is first approved by our Board of Trustees, including the approval of a majority of the members of our Board of
Trustees who are not affiliates or associates of the interested shareholder. This resolution, however, may be altered or repealed in whole or in part at any time. </FONT></P>

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Control Share Acquisitions  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The MGCL contains a provision which regulates control share acquisitions. This provision applies to REITs formed under Maryland law
like us. The MGCL provides that control shares of a REIT formed under Maryland law acquired in a control share acquisition have no voting rights except to the extent that the acquisition is approved
by a vote of two thirds of the votes entitled to be cast on the matter, excluding shares owned by the acquiror, by officers or by trustees who are employees of the trust. Control shares are voting
shares, which, if aggregated with all other shares previously acquired by the acquiror, or in respect of which the acquiror is able to exercise or direct the exercise of voting power (except solely by
virtue of a revocable proxy), would entitle the acquiror to exercise voting power in electing trustees within one of the following ranges of voting
power:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> one-tenth or more but less than one-third; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> one-third or more but less than a majority; or </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> a majority or more of all voting power. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;An
acquiror must obtain the necessary shareholder approval each time it acquires control shares in an amount sufficient to cross one of the thresholds noted above. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Control
shares do not include shares which the acquiring person is entitled to vote as a result of having previously obtained shareholder approval. The MGCL provides for certain
exceptions from the definition of control share acquisition. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A
person who has made or proposes to make a control share acquisition, upon satisfaction of the conditions set forth in the statute, including an undertaking to pay the expenses of the
meeting, may compel the board of trustees of the trust to call a special meeting of shareholders to be held within </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>36</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>50&nbsp;days
of demand to consider the voting rights of the shares. If no request for a meeting is made, the trust may itself present the matter at any shareholders meeting. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
trust may not redeem shares for which voting rights have previously been approved. Fair value is determined without regard to the absence of voting rights for the control shares. If
voting rights for control shares are approved at a shareholders meeting and the acquiror becomes entitled to vote a majority of the shares entitled to vote, the control share acquisition statute of
the MGCL generally provides that all other shareholders would have the right to exercise appraisal rights. The fair value of the shares as determined for purposes of these appraisal rights may not be
less than the highest price per share paid by the acquiror in the control share acquisition. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
control share acquisition statute of the MGCL does not apply to the following:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> shares acquired in a merger, consolidation or share exchange if the trust is a party to the transaction; or </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> acquisitions approved or exempted by a provision in the declaration of trust or bylaws of the trust adopted before the acquisition of
shares. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
bylaws contain a provision exempting any and all acquisitions by any person of our common shares from the control share acquisition statute. This provision may be amended or
eliminated at any time in the future. Nevertheless, even if the bylaw provision is amended or eliminated, if voting rights for control shares are approved at a shareholders meeting and the acquiror
becomes entitled to vote a majority of the shares entitled to vote, our declaration of trust provides that our shareholders may not exercise appraisal rights unless the Board of Trustees expressly
grants appraisal rights. </FONT></P>

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Amendment to our Declaration of Trust, Dissolution and Mergers  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Under the Maryland REIT Law, a REIT formed under Maryland law generally cannot dissolve, amend its declaration of trust, convert or
merge unless these actions are approved by at least two-thirds of all shares entitled to be cast on the matter. The Maryland REIT Law allows a trust's declaration of trust to set a lower percentage,
so long as the percentage is not less than a majority of the votes entitled to be cast on the matter. Our declaration of trust provides for approval of any of the foregoing actions (except amendments
to certain provisions of the declaration of trust) by a majority of shares entitled to vote on these actions provided the action in question has been approved by a majority of our Board of Trustees.
Our declaration of trust further provides that if permitted in the future by Maryland law, the majority required to approve any of the foregoing actions (subject to such exceptions) will be the
majority of shares voted. Under the Maryland REIT Law, a declaration of trust may permit the trustees by a two-thirds vote to amend the declaration of trust from time to time to qualify as a REIT
under the Code or the Maryland REIT Law without the affirmative vote or written consent of the shareholders. Our declaration of trust permits this type of action by our Board of Trustees. Our
declaration of trust also permits our Board of Trustees to effect changes in our unissued shares, as described more fully above, and to change our name without shareholder approval, and provides that,
to the extent permitted in the future by Maryland law, our Board of Trustees may amend any other provision of our declaration of trust without shareholder approval. The Maryland REIT Law provides that
a majority of our entire board, without action by the shareholders, may,
among other things, amend our declaration of trust to change the name or other designation or the par value of any class or series of our shares and the aggregate par value of our shares. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>37</FONT></P>

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Anti-Takeover Effect of Maryland Law and of Our Declaration of Trust and Bylaws  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following provisions in our declaration of trust and bylaws and in Maryland law could delay or prevent a change in our
control:</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the prohibition in our declaration of trust of any shareholder other than RMR&nbsp;LLC and its affiliates from owning more than 9.8%
of the number or value of our outstanding shares; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the division of our Trustees into classes, with two classes remaining with terms expiring in 2016 and 2017, respectively, which could
delay a change of control of us (although effective at our 2015 annual meeting of shareholders, trustees of the class of trustees whose term expired at that meeting or expires at a subsequent annual
meeting of shareholders are elected annually, with all of our trustees being elected annually as of our 2017 annual meeting of shareholders, and with a majority of our current trustees having terms
expiring at our 2016 annual meeting of shareholders); </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the authority of our Board of Trustees to make various elections under Maryland's Unsolicited Takeover Act and other provisions of
Maryland law which may delay or otherwise prevent a change of control of us; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> shareholder voting rights and standards for the election of trustees and other matters which generally require larger majorities for
approval of actions which are not approved by our trustees or for the election of trustees in contested elections than for actions which are approved by our trustees or for the election of trustees in
uncontested elections; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the authority of our Board of Trustees, and not our shareholders, to adopt, amend or repeal our bylaws; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the ability of our trustees to expand our Board of Trustees and fill vacancies which may be created by the Board of Trustees; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the fact that only our Board of Trustees may call shareholder meetings and that shareholders are not entitled to act without a
meeting; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> required qualifications for an individual to serve as a trustee and a requirement that certain of our trustees be "managing trustees"
and other trustees be "independent trustees"; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> limitations on the ability of, and various requirements that must be satisfied in order for, our shareholders to propose nominees for
election as trustees and propose other business to be considered at a meeting of our shareholders; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> limitations on the ability of our shareholders to remove our trustees; and </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the authority of our Board of Trustees to adopt certain amendments to our declaration of trust without shareholder approval, including
the authority to increase or decrease the number of authorized shares, to create new classes or series of shares (including a class or series of shares that could delay or prevent a transaction or a
change in our control that might involve a premium for our shares or otherwise be in the best interests of our shareholders), to increase or decrease the number of shares of any class or series, and
to classify or reclassify any unissued shares from time to time by setting or changing the preferences, conversion or other rights, voting powers, restrictions, limitations as to distributions,
qualifications or terms or conditions of redemption of our shares or any new class or series of shares created by our Board of Trustees. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Because
of our ownership of AIC, we are an insurance holding company under applicable state law; accordingly, anyone who intends to solicit proxies for a person to serve as one of our
trustees or for another proposal of business not approved by our Board of Trustees may be required to receive pre-clearance from the concerned insurance regulators. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>38</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In addition, our revolving credit and term loan agreements and our shareholders agreement with AIC each also contain change in control provisions, which are
further described below, and our business management and property management agreements with RMR&nbsp;LLC contain provisions that allow for termination for convenience and termination for a
performance reason but require the payment of a termination fee, as further described in those agreements. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;For
all of these reasons, our shareholders may be unable to realize a change of control premium for any of our shares they own or otherwise effect a change of our policies. </FONT></P>

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Liability of Shareholders for Breach of Restrictions on Ownership  </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our revolving credit facility and term loan agreements provide that a change in our control, as defined in those agreements and
including RMR&nbsp;LLC ceasing to act as our business manager and property manager, constitutes a default under those agreements, and a default under those agreements could result in a cross-default
under our senior unsecured notes or our other debt. In addition, our shareholders agreement with respect to AIC provides that AIC and the other
shareholders of AIC may have rights to acquire our interests in AIC if such an acquisition occurs or if we experience some other change in control. If a breach of the ownership limitations or other
provisions of our declaration of trust or bylaws results in a default under our revolving credit facility or term loan agreements or our other debt or a loss of our ownership interests in AIC, the
shareholder or shareholders causing the breach may be liable to us and may be liable to our other shareholders for damages. These damages may be in addition to the loss of beneficial ownership and
voting rights of the shares owned by the breaching shareholder or shareholders, as described above, and these damages may be material. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="dm15401_selling_security_holders"> </A>
<A NAME="toc_dm15401_1"> </A>
<BR></FONT><FONT SIZE=2><B>  SELLING SECURITY HOLDERS    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Selling security holders are persons or entities that, directly or indirectly, have acquired or will from time to time acquire from us,
securities of the type described in this prospectus in various private transactions. These selling security holders may from time to time offer and sell the securities pursuant to this prospectus and
any applicable prospectus supplement. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Information
regarding the selling security holders, where applicable, will be set forth in a prospectus supplement, in a post-effective amendment, or in filings we make with the SEC
under the Exchange Act which are incorporated herein by reference. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="dm15401_plan_of_distribution"> </A>
<A NAME="toc_dm15401_2"> </A>
<BR></FONT><FONT SIZE=2><B>  PLAN OF DISTRIBUTION    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We or our selling security holders may sell the securities to one or more underwriters for public offering and sale by them or may sell
the securities to investors directly or through agents or through a combination of any of these methods of sale. Any underwriter or agent involved in the offer and sale of the securities will be named
in the applicable prospectus supplement. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
distribution of the securities may be effected from time to time in one or more transactions at a fixed price or prices, which may be changed, at market prices prevailing at the time
of sale, at prices related to the prevailing market prices or at negotiated prices. We or our selling security holders may engage in at the market offerings into an existing trading market in
accordance with Rule&nbsp;415(a)(4) of the Securities Act. We or our selling security holders also may, from time to time, authorize underwriters acting as their agents to offer and sell the
securities upon the terms and conditions as are set forth in the applicable prospectus supplement. In connection with the sale of securities, underwriters may be deemed to have received compensation
from us or our selling security holders in the form of underwriting discounts or commissions and may also receive commissions from purchasers of securities for whom they may act as agent. Underwriters
may sell securities to or through dealers,
and the dealers may receive compensation in the form of discounts, concessions or commissions from the underwriters and/or commissions from the purchasers for whom they may act as agent. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>39</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Any
underwriting compensation paid by us or our selling security holders to underwriters or agents in connection with the offering of securities offered by means of this prospectus, and
any discounts, concessions or commissions allowed by underwriters to participating dealers, will be set forth in the applicable prospectus supplement. Underwriters, dealers and agents participating in
the distribution of the securities may be deemed to be underwriters, and any discounts and commissions received by them and any profit realized by them on resale of the securities may be deemed to be
underwriting discounts and commissions, under the Securities Act. Underwriters, dealers and agents may be entitled, under agreements entered into with us or our selling security holders, to
indemnification against and contribution toward civil liabilities, including liabilities under the Securities Act. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unless
otherwise specified in the applicable prospectus supplement, any securities issued hereunder (other than common shares) will be new issues of securities with no established
trading market. Any underwriters or agents to or through whom such securities are sold by us or our selling security holders for public offering and sale may make a market in such securities, but such
underwriters or agents will not be obligated to do so and may discontinue any market making at any time without notice. We cannot assure you as to the liquidity of the trading market for any such
securities. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
or our selling security holders may enter into derivative transactions with third parties, or sell securities not covered by this prospectus to third parties in privately negotiated
transactions. If the applicable prospectus supplement indicates, in connection with those derivatives, the third parties may sell securities covered by this prospectus and the applicable prospectus
supplement, including in short sale transactions. If so, the third party may use securities pledged by us or our selling security holders or borrowed from us, our selling security holders or others to
settle those sales or to close out any related open borrowings of shares, and may use securities received from us or our selling security holders in settlement of those derivatives to close out any
related open borrowings of shares. The third party in such sale transactions will be an underwriter and will be identified in the applicable prospectus supplement. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;From
time to time, one or more of the selling security holders may pledge, hypothecate or grant a security interest in some or all of the securities owned by them. The pledgees, secured
parties or persons to whom the securities have been hypothecated will, upon foreclosure in the event of default, be deemed to be selling security holders. The number of the initial selling security
holder's securities offered under this prospectus will decrease as and when any pledgee, secured party or other person takes such actions. The plan of distribution for that selling security holder's
securities will otherwise remain unchanged. In addition, a selling security holder may, from time to time, sell the securities
short, and, in those instances, this prospectus may be delivered in connection with the short sales and the securities offered under this prospectus may be used to cover short sales. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
will not receive any proceeds from sales of any securities by the selling security holders. We cannot assure you that the selling security holders will sell all or any portion of
their securities, if any, covered by this prospectus. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
connection with an offering of securities, the underwriters may engage in stabilizing and syndicate covering transactions. These transactions may include overallotments or short sales
of the securities, which involves sales of securities in excess of the principal amount of securities to be purchased by the underwriters in an offering, which creates a short position for the
underwriters. Covering transactions involve purchases of the securities in the open market after the distribution has been completed in order to cover short positions. Stabilizing transactions consist
of certain bids or purchases of securities made for the purpose of preventing or retarding a decline in the market price of the securities while the offering is in progress. Any of these activities
may have the effect of preventing or retarding a decline in the market price of the securities being offered. They may also cause the price of the securities being offered to be higher than the price
that otherwise would exist in the open market in the absence of these transactions. The underwriters may conduct these transactions on the </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>40</FONT></P>

<HR NOSHADE>
<P style='font-family:times;page-break-before:always'></p>
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<A NAME="page_dm15401_1_41"> </A>

<P style="font-family:times;"><FONT SIZE=2><A HREF="#bg15401a_main_toc">Table of Contents</A></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>NYSE,
in the over-the-counter market or otherwise. If the underwriters commence any of these transactions, they may discontinue them at any time. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
underwriters, dealers and agents that participate in the offer of securities covered by this prospectus, or their affiliates or associates, may engage in transactions with and
perform services for us or our selling security holders and our or their affiliates in the ordinary course of business for which they may have received or receive customary fees and reimbursement of
expenses. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="dm15401_legal_matters"> </A>
<A NAME="toc_dm15401_3"> </A>
<BR></FONT><FONT SIZE=2><B>  LEGAL MATTERS    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unless otherwise specified in connection with the particular offering of any securities, Sullivan&nbsp;&amp; Worcester&nbsp;LLP, as to
certain matters of New York law, and Venable&nbsp;LLP, as to certain matters of Maryland law, will pass upon the validity of the offered securities for us. Sullivan&nbsp;&amp; Worcester&nbsp;LLP has
passed upon certain tax matters in an opinion filed with the registration statement of which this prospectus is a part. Sullivan&nbsp;&amp; Worcester&nbsp;LLP also represents RMR&nbsp;LLC, our
manager,
Five Star, SIR and certain of their affiliates on various matters. Venable&nbsp;LLP also represents Five Star and SIR on various matters. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="dm15401_experts"> </A>
<A NAME="toc_dm15401_4"> </A>
<BR></FONT><FONT SIZE=2><B>  EXPERTS    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The consolidated financial statements of Senior Housing Properties Trust appearing in Senior Housing Properties Trust's Annual Report
(Form&nbsp;10-K) for the year ended December&nbsp;31, 2014 (including the schedule appearing therein), and the effectiveness of Senior Housing Properties Trust's internal control over financial
reporting as of December&nbsp;31, 2014, have been audited by Ernst&nbsp;&amp; Young&nbsp;LLP, independent registered public accounting firm, as set forth in their reports thereon, included therein,
and incorporated herein by reference. Such consolidated financial statements are, and audited financial statements to be included in subsequently filed documents will be, incorporated herein in
reliance upon the reports of Ernst&nbsp;&amp; Young&nbsp;LLP pertaining to such financial statements and the effectiveness of our internal control over financial reporting as of the respective dates
(to the extent covered by consents filed with the Securities and Exchange Commission) given on the authority of such firm as experts in accounting and auditing. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
combined statement of revenues and certain expenses of the CCIT&#151;Healthcare Properties for the year ended December&nbsp;31, 2014, incorporated in this prospectus by
reference from the Current Report on Form&nbsp;8-K filed by Senior Housing Properties Trust on June&nbsp;26, 2015, has been audited by McGladrey&nbsp;LLP, independent auditors, as stated in
their report, which is incorporated herein by reference. Such statement of revenues and certain expenses has been so incorporated in reliance upon the report of such firm given upon their authority as
experts in accounting and auditing. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
audited historical statement of revenues and certain expenses of the Senior Living Communities included on pages&nbsp;F-6 through F-9 of Senior Housing Properties Trust's Current
Report on Form&nbsp;8-K dated June&nbsp;26, 2015 has been so incorporated in reliance on the report of PricewaterhouseCoopers&nbsp;LLP, independent certified public accountants, given on the
authority of said firm as experts in auditing and accounting. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="dm15401_where_you_can_find_more_information"> </A>
<A NAME="toc_dm15401_5"> </A>
<BR></FONT><FONT SIZE=2><B>  WHERE YOU CAN FIND MORE INFORMATION    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We file annual, quarterly and current reports, proxy statements and other information with the SEC. You may read and copy any reports,
statements or other information on file at the SEC's public reference room at 100&nbsp;F Street, N.E., Washington, D.C. 20549. You can request copies of those documents upon payment of a duplicating
fee to the SEC. This prospectus is part of a registration statement and does not contain all of the information set forth in the registration statement. You may call the SEC at 1-800-SEC-0330 for
further information on the operation of the
public reference rooms. You can review our SEC filings and the registration statement by accessing the SEC's Internet </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>41</FONT></P>

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<P style="font-family:times;"><FONT SIZE=2><A HREF="#bg15401a_main_toc">Table of Contents</A></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>site
at www.sec.gov or by accessing our Internet site at www.snhreit.com. Website addresses are included in this prospectus as textual references only and the information in such websites, and any
information that is linked to our website (other than our filings with the SEC that are expressly incorporated by reference as set forth under "Information Incorporated by Reference"), is not
incorporated by reference into this prospectus or related registration statement. </FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Our
common shares are traded on the NYSE under the symbol "SNH," and you can review similar information concerning us at the office of the NYSE at 20 Broad Street, New York, New
York&nbsp;10005. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2><A
NAME="dm15401_information_incorporated_by_reference"> </A>
<A NAME="toc_dm15401_6"> </A>
<BR></FONT><FONT SIZE=2><B>  INFORMATION INCORPORATED BY REFERENCE    <BR>    </B></FONT></P>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The SEC allows us to "incorporate by reference" the information we file with them, which means that we can disclose important
information to you by referring you to those documents. The information incorporated by reference is considered to be part of this prospectus. Statements in this prospectus regarding the contents of
any contract or other document may not be complete. You should refer to the copy of the contract or other document filed as an exhibit to the registration statement. Later information filed with the
SEC will update and supersede information we have included or incorporated by reference in this prospectus. </FONT></P>


<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
incorporate by reference the documents listed below and any filings made after the date of the initial filing of the registration statement of which this prospectus is a part made
with the SEC under Sections&nbsp;13(a), 13(c), 14 or 15(d) of the Exchange Act until the offering of the securities made by this prospectus is completed or terminated (other than, in each case,
documents or information deemed to have been furnished and not filed in accordance with SEC rules, including under Items&nbsp;2.02 and 7.01 (and any related Item&nbsp;9.01) of
Form&nbsp;8-K):</FONT></P>

<UL>
<DL compact>
<DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> our Annual Report on Form&nbsp;10-K for the fiscal year ended December&nbsp;31, 2014; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> our Quarterly Report on Form&nbsp;10-Q for the fiscal quarter ended March&nbsp;31, 2015; </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> our Current Reports on Form&nbsp;8-K dated January&nbsp;29, 2015, February&nbsp;3, 2015, February&nbsp;4, 2015, May&nbsp;19,
2015, June&nbsp;5, 2015 (Item&nbsp;1.01 and the related exhibits included in Item&nbsp;9.01 only) and June&nbsp;26, 2015; </FONT><FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the information identified as incorporated by reference under Items&nbsp;10, 11, 12, 13 and 14 of Part&nbsp;III of our Annual
Report on Form&nbsp;10-K for the fiscal year ended December&nbsp;31, 2014, from our definitive Proxy Statement for our 2015 Annual Meeting of Shareholders dated March&nbsp;2, 2015; and </FONT> <FONT SIZE=2>
<BR><BR></FONT></DD><DT style='font-family:times;margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD style="font-family:times;"><FONT SIZE=2> the description of our common shares contained in our registration statement on Form&nbsp;8-A dated September&nbsp;21, 1999,
including any amendments or reports filed for the purpose of updating that description. </FONT></DD></DL>
</UL>

<P style="font-family:times;"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
will provide you with a copy of the information we have incorporated by reference, excluding exhibits other than those which we specifically incorporate by reference in this
prospectus. You may obtain this information at no cost by writing or telephoning us at: Two Newton Place, 255 Washington Street, Suite&nbsp;300, Newton, Massachusetts, 02458-1634,
(617)&nbsp;796-8234, Attention: Investor Relations. </FONT></P>

<P ALIGN="CENTER" style="font-family:times;"><FONT SIZE=2>42</FONT></P>

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</FONT> <FONT SIZE=2>
<A HREF="#bg15403a_main_toc">Table of Contents</A> </FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><BR></FONT></P>

<P style="font-family:arial;"><FONT SIZE=2><div
style="width:100%;border-top:solid #000000 3.0pt;padding:0in 0in 0in 0in;font-size:3.0pt;"></div>
<div style="width:100%;border-top:solid #000000 1.0pt;padding:0in 0in 0in 0in;font-size:4.0pt;"></div> </FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2><B>
<IMG SRC="g269774.jpg" ALT="LOGO" WIDTH="204" HEIGHT="235">
  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=4><B>$&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;% Senior Notes Due 2025  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=3><B>

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  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=3><B> PROSPECTUS SUPPLEMENT  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=3><B>

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 </B></FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=4><B>Citigroup  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=4><B> RBC Capital Markets  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=4><B> UBS Investment Bank  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=4><B> Wells Fargo Securities  </B></FONT></P>

<P ALIGN="CENTER" style="font-family:arial;"><FONT SIZE=2>July&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;, 2015 </FONT></P>
 <p style="font-family:arial;line-height:1pt;margin-left:18pt;"><font> </FONT> <FONT SIZE=2>
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end
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
